FAM
A 3,000 kg car is acted on by a total force of 4,500 N. What is the car’s acceleration?
1.5 m/s2
What does Newton's First Law of Motion state?
A) An object at rest will stay at rest unless acted upon by an unbalanced force.
B) An object in motion will change direction unless acted upon by a force.
C) An object will always move in a circular path.
A) An object at rest will stay at rest unless acted upon by an unbalanced force.
Which object will accelerate more if pushed with the same amount of force?
Object #1: 50kg
Object #2: 100kg
Object #1: 50kg
What does Newton's Third Law of Motion state?
A) An object at rest stays at rest.
B) For every action, there is an equal and opposite reaction.
C) Force equals mass times acceleration.
D) Objects in motion tend to stay in motion.
B) For every action, there is an equal and opposite reaction.
A box is pushed with a force of 10 N to the right and another force of 4 N is pushing it to the left. What is the net force acting on the box?
A) 6 N to the right
B) 6 N to the left
C) 14 N to the right
D) 14 N to the left
A) 6 N to the right
A soccer ball is kicked with a force of 100 N and has a mass of 0.5 kg. What is the acceleration of the soccer ball?
200 m/s2
Which of the following best describes inertia?
A) The ability of an object to change its speed.
B) The resistance of an object to a change in its state of motion.
C) The force that pulls objects toward each other.
D) The speed of an object in motion.
B) The resistance of an object to a change in its state of motion.
Use the boxes on the board to answer this question.
All of these boxes are pushed with 100 N of force.
List the boxes from most acceleration to least acceleration.
D, A, C, B
When a swimmer pushes water backward with their hands, what happens to the swimmer?
A) They float in place.
B) They move forward.
C) They sink to the bottom.
D) They stay still.
B) They move forward.
C) They sink to the bottom.
A runner travels 40 meters in 5 seconds. What is the runner’s speed?
A) 5 m/s
B) 8 m/s
C) 10 m/s
D) 15 m/s
B) 8 m/s
Use the illustration on the board to answer this question.
What is the acceleration?
1 m/s2 Right
Why do you feel a jerk forward when a car suddenly stops?
A) Because of gravity pulling you forward.
B) Because of inertia, your body wants to keep moving in the same direction.
C) Because the seatbelt is too tight.
D) Because the car is accelerating backward.
B) Because of inertia, your body wants to keep moving in the same direction.
Use the boxes on the board to answer the question:
All of these boxes are 15 kg. Which would have the most acceleration and what is its acceleration?
C 4 m/s2
A person jumps off a small boat onto a dock. What is the reaction force when the person pushes down on the boat to jump?
A) The boat moves towards the dock.
B) The person moves forward towards the dock.
C) The boat pushes the person upwards.
D) The boat moves backwards away from the dock.
C) The boat pushes the person upwards.
Classify each statement as showing either speed or velocity:
The car is moving at 60 km/h.
The bike is traveling east at 12 m/s.
The train is going 80 miles per hour.
The plane is flying north at 500 m/s.
1 - Speed
2 - Velocity
3 - Speed
4 - Velocity
A jet ski has a mass of 400 kg and is pushed forward by a force of 2,000 N. What is the acceleration of the jet ski?
5 m/s2
The 1st part of The Law of Inertia states that an object in motion will stay in that motion unless acted on by unbalanced forces. Which answer shows this part of the Law?
A. A car coming to a stop when the brakes are applied.
B. Someone picking up a pencil that was at rest.
C. A rock staying still.
A. A car coming to a stop when the brakes are applied.
If two objects, one with a mass of 3 kg and another with a mass of 6 kg, are subjected to the same force, how will their accelerations compare?
A) The 3 kg object will accelerate twice as fast as the 6 kg object.
B) The 6 kg object will accelerate twice as fast as the 3 kg object.
C) Both objects will have the same acceleration.
D) The accelerations cannot be determined without more information.
A) The 3 kg object will accelerate twice as fast as the 6 kg object.
During a push up the athlete’s hands pushed down on the ground with 300 N of force. What is the reaction force?
The ground pushes up on the hands with 300 N of force
In a tug-of-war contest, persons A and B pull to the right, and persons C and D pull to the left. A is pulling with 40 N, B with 20 N, C with 15 N, and D with 35 N. What is the Net Force?
10 N to the right
A spaceship has a mass of 2,000 kg. The engines push it forward with a force of 12,000 N, while air resistance pushes back with a force of 2,000 N. What is the net force on the spaceship, and what is its acceleration?
5 m/s²
Which of the following best shows Newton’s 1st Law of Motion (the law of inertia)?
A) A soccer ball keeps rolling across the field until friction and grass slow it down.
B) A rocket accelerates upward when its engines push hot gases downward.
C) A swimmer pushes the water backward and moves forward.
D) A balloon releases air and shoots in the opposite direction.
A) A soccer ball keeps rolling across the field until friction and grass slow it down.
According to Newton’s Second Law of Motion, what happens to an object’s acceleration if the same force is applied but the object’s mass is doubled?
A) The acceleration doubles
B) The acceleration stays the same
C) The acceleration is cut in half
D) The acceleration becomes zero
C) The acceleration is cut in half
When a swimmer pushes backward on the water with their hands, they move forward through the pool. Which statement best explains why this happens?
A) The swimmer moves forward because the water has less mass than the swimmer.
B) The swimmer moves forward because the water pulls them forward.
C) The swimmer moves forward because the water pushes forward on them with an equal and opposite force.
D) The swimmer moves forward because their arms are stronger than the water.
C) The swimmer moves forward because the water pushes forward on them with an equal and opposite force.
A car travels 60 meters in 3 seconds. What does the car’s speed represent in this situation?
A) The total distance the car can travel before stopping
B) The amount of force the engine produces
C) The rate at which the car’s position changes over time
D) The total time it takes the car to travel 60 meters
C) The rate at which the car’s position changes over time