WorksheetsMotion and Forces
Total questions: 20
Worksheet time: 30mins
A sailboat on a lake sails 40. meters north and then sails 40. meters due east. Compared to its starting position, the new position of the sailboat is
40. m due east
40. m due north
57 m northeast
80. m northeast
A ball is thrown straight upward from the surface of Earth. Which statement best describes the ball’s velocity and acceleration at the top of its flight?
Both velocity and acceleration are zero.
Velocity is zero and acceleration is nonzero.
Velocity is nonzero and acceleration is zero.
Both velocity and acceleration are not zero.
How would the mass and weight of an object on the Moon compare to the mass and weight of the same object on Earth?
Mass and weight would both be less on the Moon.
Mass would be the same but its weight would be less on the Moon.
Mass would be less on the Moon and its weight would be the same.
Mass and weight would both be the same on the Moon.
As shown in the diagram below, a rope attached to a 500.-kilogram crate is used to exert a force of 45 newtons at an angle of 65 degrees above the horizontal. The horizontal component of the force acting on the crate is
19 N
210 N
41 N
450 N
A 40.0-kilogram child exerts a 100.-newton force on a 50.0-kilogram object. The magnitude of the force that the object exerts on the child is
0.0 N
80.0 N
100. N
125 N
A student is standing in an elevator that travels from the first floor to the tenth floor of a building. The student exerts the greatest force on the floor of the elevator when the elevator is
accelerating upward as it leaves the first floor
slowing down as it approaches the tenth floor
moving upward at constant speed
at rest on the first floor
At the bottom of a hill, a car has an initial velocity of +16.0 meters per second. The car is uniformly accelerated at −2.20 meters per second squared for 5.00 seconds as it moves up the hill. How far does the car travel during this 5.00-second interval?
107 m
74.5 m
52.5 m
25.0 m
As represented in the diagram, an object of mass m, located on the surface of the Moon, is attracted to the Moon with a gravitational force, F. An object of mass 2m, at an altitude equal to the Moon’s radius, r, above the surface of the Moon, is attracted to the Moon with a gravitational force of
F
2F
2F
4F
The graph represents the relationship between velocity and time for an object moving along a straight line. What is the magnitude of the object’s acceleration?
5.0 m/s2
10. m/s2
8.0 m/s2
20. m/s2
A projectile lands at the same height from which it was launched. Which initial velocity will result in the greatest horizontal displacement of the projectile? [Neglect friction.]
A 5.0-kilogram box is sliding across a level floor. The box is acted upon by a force of 27 newtons east and a frictional force of 17 newtons west. What is the magnitude of the acceleration of the box?
0.50 m/s2
2.0 m/s2
8.8 m/s2
10. m/s2
A 12.0-kilogram cart is moving at a speed of 0.25 meter per second. After the speed of the cart is tripled, the inertia of the cart will be
unchanged
one-third as great
three times greater
nine times greater
A projectile with mass m is fired with initial horizontal velocity vx from height h above level ground. Which change would have resulted in a greater time of flight for the projectile? [Neglect friction.]
decreasing the mass to 2m
decreasing the height to 2h
increasing the initial horizontal velocity to 2vx
increasing the height to 2h
Starting from rest, a car travels 18 meters as it accelerates uniformly for 3.0 seconds. What is the magnitude of the car’s acceleration?
6.0 s2m
3.0 s2m
2.0 s2m
4.0 s2m
The diagram represents a box sliding down an incline at constant velocity. Which arrow represents the direction of the frictional force acting on the box?
A
B
C
D
An object weighing 2.0 newtons is pushed across a horizontal, frictionless surface by a horizontal force of 4.0 newtons. The magnitude of the net force acting on the object is
0.0 N
2.0 N
8.0 N
4.0 N
Which pair of graphs represents the vertical motion of an object falling freely from rest?
When the sum of all the forces acting on a block on an inclined plane is zero, the block
must be at rest
must be accelerating
may be slowing down
may be moving at constant speed
Which graph represents the motion of an object traveling with a positive velocity and a negative acceleration?
A space probe is launched into space from Earth’s surface. Which graph represents the relationship between the magnitude of the gravitational force exerted on Earth by the space probe and the distance between the space probe and the center of Earth?
