Question 1
Correct
6.00 points out
of 6.00
A ball rolls with a speed of 2 m /s along a horizontal table. If the ball rolls off the table and
lands on

... [Show More] the floor 0.50 m from the edge of the table, what is the height of the table?
Select one:
a. 1.2 m
b. 0.1 m
c. 0.3 m
d. 0.6 m
Question 2
Correct
6.00 points out
of 6.00
If a vector pointing toward the north is crossed with one pointing toward the east, the
resulting vector is pointing .
Select one:
a. up
b. down
c. south
d. None of the other choices; the vector is zero.
Straighterline PHY250 General Physics I Graded Exam 1 (New Version June 2024)
We are a team of experts offering class attendance for all Straighterline, Online ATI, HESI,
NCLEX, Portage Learning, Sophia etc courses (including final proctored exams!!). We also write
essays, discussion posts, research papers and school assignments. Should you need any of these
services, Contact us via email: merchantmuchiri@gmail.com or WhatsApp: +1 (540) 753-5914.
Guaranteed Passing!
PHY250_TW | Chapter 3: Dynamics
Started on
State Finished
Completed on
Time taken 57 mins 37 secs
GradeQuestion 4
Correct
6.00 points out
of 6.00
Consider a basket with 3.046 kg of fruit. When you weigh the whole package (fruit +
basket), the reading on the scale is 4.2 kg. What is the most realistic weight of the basket
alone?
Select one:
a. 1.2 kg
b. 1.154 kg
c. 1.15 kg
d. 1 kg
Question 5
Incorrect
0.00 points out
of 6.00
Consider a mass m that is attached to a rope such that the mass is in uniform circular
motion. Which of the following is the magnitude of the centripetal force?
Select one:
a. mv2/r2
b. mv /r
c. m2v2/r2
d. mv2/r
Question 3
Correct
6.00 points out
of 6.00
When going around a cloverleaf, a car suddenly comes upon a long stretch of essentially
frictionless ice. At this instant the car .
Select one:
a. continues around the corner, uniformly completing its circular trajectory
b. continues around the corner, but at with a larger arc
c. continues on in a straight line path
d. begins to tumbleQuestion 7
Correct
6.00 points out
of 6.00
The position of an object along the x-axis is described by the formula x = 2t3 4t. Which
of the following are the correct formulas for the velocity and acceleration of the object?
Select one:
a. v = 2t2 t, a = 2t 4
b. v = 6t2 4, a = 12t
c. v = (1/2)t4 2t2, a = (5/2)t5 (2/3)t3
d. v = 6t 4, a = 6
Question 6
Correct
6.00 points out
of 6.00
Consider a mass of 85 kg lying on the ground. The coefficient of static friction between
them is μs = 0.65. What is the minimum force you need to apply in order to slide the
mass?
Select one:
a. 55.2 N
b. 1,282 N
c. 541 N
d. 1,082 NFor the given velocity-time graph, select the corresponding position-time graph.
Select one:
a.
b.
c.
d.
Question 8
Incorrect
0.00 points out
of 6.00Which graph best illustrates the following description of motion?
A car starts at rest, accelerates at a constant rate until it cruises at a constant speed, and
then brakes at a constant rate until it is moving at a constant, very slow speed.
Select one:
a.
b.
c.
Question 9
Correct
6.00 points out
of 6.00Question 10
Correct
6.00 points out
of 6.00
Which of the following statements concerning friction between the surfaces of two objects
is correct?
Select one:
a. The force of friction mostly depends on the nature of the two surfaces.
b. The force of friction depends soley on the speed that the two surfaces are moving
relative to each other.
c. The force of friction always varies as the square of the area of contact between the
two surfaces.
d. The force of friction is dependent on both the speed that the two surfaces are
moving relative to each other and the area of contact.
d.Which graph best illustrates the following description of motion?
A car starts at rest, accelerates at a constant rate until it comes up behind a motorcycle
that is moving more slowly, then slows down to follow the motorcycle, maintaining a
constant distance behind it. Once the motorcycle has turned, the driver of the car
accelerates to a much faster speed and then maintains that speed.
Select one:
a.
b.
c.
Question 11
Correct
6.00 points out
of 6.00Question 12
Correct
6.00 points out
of 6.00
Consider a sphere with a radius of 4.0830 m. What is its volume?
Select one:
a. 285 m3
b. 285.1193 m3
c. 285.12 m3
d. 285.1190 m3
Question 13
Incorrect
0.00 points out
of 6.00
If the formula for work is given by W = F ⋅ d , how much work is done by 60 N force
which is applied as 25∘ with respect to the 13 m displacement?
Select one:
a. 0 N⋅m
b. 330 N⋅m
c. 707 N⋅m
d. 780 N⋅m
d.Imagine that you push down on an object that is sitting on a frictionless table. Which of the
following diagrams includes all the forces acting on the object?
−→W
: object′s weight
−→Fy
: force you apply to the object
→N
: normal force applied by table to the object
→ O
: normal force applied by the object to the table
Select one:
a.
b.
c.
Question 14
Correct
6.00 points out
of 6.00Question 15
Correct
6.00 points out
of 6.00
Which of the following is not an example of a vector?
Select one:
a. displacement
b. velocity
c. acceleration
d. mass
Question 16
Correct
6.00 points out
of 6.00
Robert measures an object to be 5 m away, while his much twin sister Roberta measures
the same object to be 3 m away. Which of the following statements must be true?
Select one:
a. Robert and Roberta are exactly 4 m apart.
b. Robert and Roberta are exactly 2 m apart.
c. Robert and Roberta are exactly 8 m apart.
d. The separation between Robert and his sister cannot be calculated with the
information given.
d.Question 18
Correct
6.00 points out
of 6.00
How is a kilogram defined?
Select one:
a. by a silicon crystal containing a certain number of atoms
b. by a platinum brick in Europe
c. by the mass of 10 cubic centimeters of water
d. from the mass required to create a 1 Newton force
Question 19
Correct
6.00 points out
of 6.00
A projectile is launched from a height of 250 m with initial horizontal velocity of 50 m/s.
What is the horizontal range of the projectile?
Select one:
a. 312 m
b. 235 m
c. 410 m
d. 357 m
e. None of the above
Question 17
Incorrect
0.00 points out
of 6.00
Given the position vector r (t) = 4t i + 3tj, which of the following is the acceleration
vector?
2
Select one:
a.
→
a (t) = 8ti + 3j
a
c. a 4
3
3 3 2
2
aQuestion 21
Correct
6.00 points out
of 6.00
Which of the following is a correct statement concerning the velocity of a particle in
uniform circular motion?
Select one:
a. The velocity is in the same direction as the angular velocity.
b. The velocity is directed radially inward.
c. The velocity is in the same direction as the centripetal acceleration.
d. The velocity is constantly changing directions.
Question 22
Correct
6.00 points out
of 6.00
A car of mass m drives along a road. The road exerts a frictional force on each of the tires
equivalent to f. The frictional force of air resitance R exerts a backwards force on the car.
Assuming these are the only two forces in the horizontal direction, under which of the
following relationships would the car move at a constant speed?
Select one:
a. 4 f = R
c. f = N g cos
mg
e. None of the above
Question 20
Correct
6.00 points out
of 6.00
Which is not an mks unit?
Select one:
a. meter
b. kilogram
c. second
d. centimeterQuestion 24
Correct
6.00 points out
of 6.00
Consider a rectangle with a base of 0.567 m and a height of 1.606 m. What is its area?
Select one:
a. 0.910 m2
b. 0.911 m2
c. 0.9106020 m2
d. 0.9106 m2
Question 25
Correct
6.00 points out
of 6.00
In space, far away from any planets, which of the following spacecraft requires the
greatest force to accelerate?
Select one:
a. Megaship, the large and powerful, with a mass of 10 million kg
b. the 100 kg Interstellar Child Scooter
c. the sleek and aerodynamic 10,000 kg Speedstar
d. none of the other choices as things are weightless in space
Quiz navigation
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Show one page at a time
Question 23
Correct
6.00 points out
of 6.00
Which of the following is correct concerning the centripetal acceleration of an object in
uniform circular motion?
Select one:
a. The centripetal acceleration is directed radially outward.
b. The centripetal acceleration is in the tangential direction.
c. The centripetal acceleration is directed radially inward.
d. The centripetal acceleration is constant throughout the path of the uniform circular
motion.© 2023 StraighterLine. All rights reserved
Finish review [Show Less]