1D Motion
Newton's law and Forces
2D Motion
Momentum
Energy, work & power
100
What is the difference between speed and velocity?
What is Speed is a scalar quantity, while velocity is a vector quantity
100
Which arrow representing Normal force and which one shows weight?
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Which arrow representing Normal force and which one shows weight?
Question 22 options:
mg sin@, N
N, mg
mg cos@, mg sin@
mg, N
What is N and mg
100
The quantity that represents the change in velocity per unit of time for an object undergoing 2D motion.
What is acceleration?
100
The product of an object's mass and its velocity is known as this.
What is momentum?
100
Energy associated with the motion of an object is known as this.
What is kinetic energy?
200
What is the SI unit for acceleration?
What is m/s2
200
Kids were playing with balls which are of equal mass. They kicked them with different forces. Which one accelerated more? Red ball – 10N Blue ball – 3N Yellow ball - 5N
Red ball since force and acceleration are directly related.
200
Which of the following measurements is NOT a Scalar?
What is distance
200
If an object's mass is doubled and its velocity remains the same, how does its momentum change
Answer: What is it doubles?
200
The energy an object possesses due to its position or configuration is called this.
What is potential energy?
300
Which of the following represents the relationship between velocity and time for an object moving with constant acceleration?
An object moving with constant acceleration is A linear graph.
300
A child riding a merry-go-round feels a centripetal force. How would the magnitude of the acceleration change if the velocity doubled (2x)?
What is Quadrupled (4x)
300
A ball rolls off a table. If the ball rolls off with twice the velocity, the time it takes to hit the floor _________ and the distance traveled horizontally _________
Is the same, doubled
300
According to the law of conservation of momentum, in the absence of external forces, the total momentum of a system before an event must be ___________ after the event.
What is the same?
300
If a force of 50 Newtons is applied to move an object a distance of 10 meters, what is the amount of work done?
What is 500 joules (J)?
400
The equation that relates initial velocity, final velocity, acceleration, and displacement in 1D motion without time.
What is the equation of motion u2=u2+2as, where v is final velocity, u is initial velocity, a is acceleration, and s is displacement?
400
According to Newton's second law of motion, this equation represents the relationship between force, mass, and acceleration.
What is Force=Mass×Acceleration or F= ma?
400
Your high school player has thrown a ball horizontally down the football field. He needs to increase the time the ball is in the air to give the receiver an opportunity to get in the right position to catch the ball. Which factor will increase the flight time of the football?
Increasing the vertical height from which the ball is thrown
400
A student watched a person fire an old cannon. The student noticed the cannonball moved with a very high velocity to the right and the cannon moved very slowly to the left. 
What statement BEST explains the student's observations?
The cannon gave most of its momentum to the cannonball, so the cannonball gained more speed than the cannon.
400
Work is defined as force multiplied by ______________________
What is the displacement (or distance) moved in the direction of the force?
500
An object is dropped from a certain height above the ground. How long will it take for the object to reach the ground? (Assume no air resistance, and take g=9.81 m/s^as the acceleration due to gravity.)
What is approximately 1.43 seconds
500
Friction is an example of this type of force that opposes motion
What is the contact force?
500
An object is projected into the air at an angle of 45 degrees with the horizontal. If the initial velocity of the object is 20 m/s, what is the maximum height reached by the object? (Assume no air resistance, and take g=9.81 m/s^2 as the acceleration due to gravity.)
What is 10 m
500
Two cars crash in a head-on collision and come to a stop. The crash analysts records the results in the data table based on their observations. Observations
Vehicle A Vehicle B
Impact time
0.01 sec 0.01 sec
Mass of vehicle
3000kg 1000kg
Velocity before impact
10 m/s - 30 m/s
The impact force for Vehicle A was the same as the impact force for Vehicle B, because the impulse of Vehicle A is equal and opposite to the impulse of Vehicle B
500
Define power in terms of work and time.
What is the rate at which work is done or energy is transferred, measured in watts (W) (Work ÷ Time)?