Are You Ready To Take The Physics Practice Questions?
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- 1.Science is a body of knowledge that
- A.
Condenses knowledge into testable laws
- B.
Describes order in nature
- C.
Is an ongoing activity of humans
- D.
All of the above choices are correct
- E.
None of the above choices are correct
- 2.As an object freely falls downward, its
- A.
Acceleration increases
- B.
Velocity increases
- C.
Both of these
- D.
None of these
- 3.A sheet of paper can be withdrawn from under a container of milk without toppling it if the paper is jerked quickly. This best demonstrates that
- A.
The milk carton has inertia
- B.
The milk carton has no acceleration
- C.
There is an action-reaction pair of forces
- D.
Gravity tends to hold the milk carton secure
- E.
None of these
- 4.The gain in speed each second for a freely-falling object is about
- A.
0
- B.
20 m/s
- C.
5 m/s
- D.
10 m/s
- E.
Depends on the initial speed
- 5.A package falls of a truck that is moving at 30 m/s. Neglecting air resistance, the horizontal speed of the package just before it hits the ground is
- A.
More than 30 m/s
- B.
Zero
- C.
Less than 30 m/s but larger than zero
- D.
About 30 m/s
- E.
More information is needed for an estimate
- 6.According to Newton's law of inertia, a rail road train in motion should continue going forever even if its engine is turned off. We never observe this because railroad trains.
- A.
Are much too heavy
- B.
Move too slowly
- C.
Must go up and down hills
- D.
Always have forces that oppose their motion
- 7.A scientific statement that can never be changed is a scientific
- A.
Principle
- B.
Theory
- C.
Hypothesis
- D.
Law
- E.
None of the above choices are correct
- 8.If no external forces are acting on a moving object it will
- A.
Continue moving at the same velocity
- B.
Move slower and slower until it finally stops
- C.
Continue moving at the same speed
- 9.Galileo's use of inclined planes allowed him to effectively
- A.
Eliminate the acceleration of free fall
- B.
Increase the acceleration beyond that of free fall
- C.
Slow down the acceleration of free fall
- D.
Eliminate friction
- 10.The two measurements necessary for calculating average speed are
- A.
Distance and acceleration
- B.
Velocity and distance
- C.
Acceleration and time
- D.
Velocity and time
- E.
Distance and time
- 11.A horse gallops a distance of 10 kilometers in a time of 30 minutes. It's average speed is
- A.
15 km/h
- B.
30 km/h
- C.
20 km/h
- D.
40 km/h
- 12.A car maintains a constant velocity of 100 km/hr for 10 seconds. During this interval it acceleration is
- A.
Zero
- B.
1000 km/hr
- C.
110 km/hr
- D.
10 km/hr
- 13.A hockey puck is set in motion across a frozen pond. If ice friction and air resistance are neglected the force required to keep the puck sliding at constant velocity is
- A.
Equal to its weight divided by its mass
- B.
Zero
- C.
Equal to the product of its mass times its weight
- D.
Equal to its weight
- 14.Twelve seconds after starting from rest, an object falling freely will have a speed of
- A.
50 m/s
- B.
100 m/s
- C.
10 m/s
- D.
More than 100 m/s
- 15.If an object moves with constant acceleration, its velocity must
- A.
Be constant also
- B.
Change by the same amount each second
- C.
Always decrease
- D.
Change b varying amounts depending on its speed
- 16.A ball tossed vertically upward rises, reaches its highest point, and then falls back to its starting point. During this time the acceleration of the ball is always
- A.
Opposite its velocity
- B.
Directed downward
- C.
In the direction of motion
- D.
Directed upward
- 17.If a car accelerates form rest at 2 meters per second per second, its speed 3 seconds later will be about
- A.
2 m/s
- B.
6 m/s
- C.
4 m/s
- D.
3 m/s
- 18.At on instant an object in free fall is moving downward at 50 meters per second. One second later is speed should be about
- A.
25 m/s
- B.
100 m/s
- C.
55 m/s
- D.
60 m/s
- E.
50 m/s
- 19.Starting from rest, the distance a freely-falling object will fall in 1.0 second is about
- A.
10 m
- B.
2.00 m
- C.
5.0 m
- D.
None of the above
- 20.An object falls freely from rest on a planet where the acceleration due to gravity is 20 meters per second squared. After 5 seconds, the object will have a speed of
- A.
20 m/s
- B.
10 m/s
- C.
50 m/s
- D.
5 m/s
- E.
100 m/s
- 21.If you drop an object, it will accelerate downward at a rate of 9.8 meters per second per second. If you instead throw it downwards, its acceleration (in the absence of air resistance and after it leaves your hand) will be
- A.
Greater than 9.8 meters per second per second
- B.
Less than 9.8 meters per second per second
- C.
9.8 meters per second per second
- 22.If a projectile is fired straight up at a speed of 10 m/s, the total time to return to its starting position is about
- A.
2 seconds
- B.
20 seconds
- C.
10 seconds
- D.
1 second
- E.
Not enough information to estimate
- 23.When a rock thrown straight upwards gets tot he exact top of its path, its
- A.
Velocity is zero and its acceleration is zero
- B.
Velocity is about 10 m/s and its acceleration is zero
- C.
Velocity is zero and its acceleration is about 10 meters per second per second
- D.
Velocity is about 10 m/s and its acceleration is about 10 meters per second per second
- E.
None of these
- 24.A ball is thrown upwards. Neglecting air resistance, what initial upward speed does the ball need to remain in the air for a total time of 10 seconds?
- A.
About 80 m/s
- B.
About 60 m/s
- C.
About 110 m/s
- D.
About 100 m/s
- E.
About 50 m/s
- 25.Which has a greater mass?
- A.
An automobile battery
- B.
A king-size pillow
- C.
Neither- both have the same
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