WorksheetsForces & Newton's Laws
Total questions: 25
Worksheet time: 42mins
A book lying on your desk will only move if:
An unbalanced force acts on it
A downward force acts on it
A normal force acts on it
A friction force on it is reduced
Newton's first law of motion is sometimes called the law of
Intertia
Momentum
Conservation
Resistance
Consider two rocks with masses of 1 and 10 kilograms. What is the relation between their inertia, masses and weights on earth?
The inertia, mass, and weight of the 10 kg rock are 10 times greater than those of the 1 kg rock.
The inertia, mass, and weight of the 10 kg rock are the same as those of the 1 kg rock.
The inertia, mass, and weight of the 10 kg rock are 10 times lighter than those of the 1 kg rock.
The inertia, mass and weight of the 1 kg rock are 10 times greater than those of the 10 kg rock.
How is the mass of passengers in a car related to their inertia?
Passengers with less mass have more inertia
The inertia decreases with each passenger that enters the car
Passengers with greater masses have more inertia
Passengers with medium mass have more inertia.
An object feels two forces. One force has a magnitude of 120 N pulling to the left and the second force has a magnitude of 80 N pulling to the right. If the object's mass is 50 kg, what is its acceleration?
0.8 s2m to the left
not enough information to calculate
no movement; forces are balanced
A soccer ball with a mass of 2.10 kg accelerates at 253
s2m the instant it is kicked. Determine the force applied by the player.120.5 N
531.3 N
0.0083 N
0 N, the only force is the force of gravity
If the box in the diagram has a mass of 50kg, what will be the acceleration it experiences and in which direction?
500 s2m upward
250 s2 m to the right
700 s2mdownward
0 s2m; no direction
The graph above shows the different velocities experienced by a car on a drive to work one day. If a force of 2000 N was applied to the car, and assuming no other forces were between point 0 and point A, what is the mass of the car?
500 kg
133.33 kg
33.33 kg
120,000 kg
According to Newton's 3rd law of motion, compare the forces experienced by a bug and a car when the bug hits the windshield of the car while the car is moving forward.
The bug experiences a greater force than the windshield
The windshield and the bug experience equal forces
The windshield experiences a greater force than the bug
The bug and the windshield experience unbalanced forces
The graph shows the weight of 3 objects on the moon as a function of their mass. The acceleration due to gravity on the moon is approximately 1.6 m/s2 . A fourth object was found to have a weight of 144 N. What would be the mass of this object?
144 kg, because mass and weight are the same on the moon.
115 kg, due to the low acceleration of gravity on the moon.
90 kg, due to the low acceleration of gravity on the moon
0 kg, because objects are weightless on the moon.
Which statement below is TRUE?
Friction always opposes the motion of an object
Static friction occurs between moving objects
Kinetic friction occurs between stationary objects
Static friction is always less than kinetic friction
Which graph best represents the relationship between the mass of an object and its distance from the center of the earth?
What is the force and direction of movement (if any) for the object shown in the diagram below?
Net Force = 36 N
Movement North at 6 N
Net Force = 36 N
No movement
Net Force = 6 N
Movement North at 6 N
Net Force = -6 N
Movement South at - 6 N
Gravity is the force of attraction between any two objects that have mass. The gravitational force that a body exerts depends in part on its mass. Which of the following factors also greatly affects the amount of gravitational force experienced between two bodies?
The distance between the bodies
The relative speed of the bodies
The altitude of the bodies
The angle of the bodies
A car engine works harder to accelerate from zero to 10 km/hr than it does to maintain a 10 km/hr velocity. Why is this?
Because static friction is harder to overcome than kinetic or rolling friction
Because static friction is easier to overcome than kinetic or rolling friction
Because static friction is harder to overcome than potential friction
Because static friction is easier to overcome than potential friction
Which of the following would experience the greatest fluid friction in free fall?
an acorn
a crumpled-up sheet of paper
an 8.5 x 11 inch sheet of flat paper
an apple
What kind of a line on a distance vs. time graph indicates that the object is accelerating?
curved
horizontal
diagonal
vertical
On the speed vs. time graph shown below, identify the line or curve that represents the motion of a car driven from one stop sign to a second stop sign.
Line A
Line B
Curve C
Curve D
The distance-time graph describes the rate of a person skiing down a mountain. Select the skier’s average speed.
3,600 m/s
180 m/s
18 m/s
0.067 m/s
In each diagram below, the mass of two objects is labeled m1 and m2. These masses are separated by a radius, r. Which diagram would produce the greatest gravitational force between the two objects?
Which graph represents the motion of a skydiver from when they jump out of a plane until they reach terminal velocity (PRIOR to opening the parachute)?
A man with a mass of 60-kg has a weight of 96N somewhere in the universe. Based on the chart above, which planet is he most likely on?
Mercury
Venus
Earth
Moon
A 200N Force, (F1), and a 250N Force, (F2) are applied to the same point at the same time to a large trunk on a friction-less, level surface. Which diagram below shows the position of the forces that will give the greatest acceleration to the trunk?
An astronaut is working in outer space. The astronaut pushes a 100 kg object away from the spaceship. The object accelerates at 8 m/s2. If the astronaut has a mass of 52 kg, what will the acceleration of the astronaut be in the opposite direction?
1216 m/s2
15.38 m/s2
650 m/s2
19 m/s2
You have four vehicles, all driving at the same velocity side-by-side on a four-lane highway. They are a fully-loaded semi-truck, an empty semi-truck, a midsize van, and a small car.
If all the vehicles brake at the same time because there is a collision ahead, which one will come to a complete stop first?
the fully loaded semi-truck
an empty semi-truck
a mid-size van
the small car
