WorksheetsPhysics Semester 1 Review
Total questions: 50
Worksheet time: 1hrs 10mins
If a piece of cheese is fired into frictionless space, the amount of force needed to keep it going equals
zero, since no force is required to keep it moving.
A racecar driver drives a 2-km lap in 60 seconds. What was their total displacement?
0m
2km
33.3 sm
0.033 sm
You run from your house to your friend's house, which is 3 km away. You then walk back home. What is your displacement?
0 km
3 km
6 km
Speed is a _______ quantity and velocity is a ________.
vector, scalar
scalar, vector
scalar, scalar
vector, vector
When a student runs and kicks a ball, they have applied an ___________ force to move the ball.
Balanced
Magnetic
Spring
Unbalanced
A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't. Which of newton's laws explains this?
The Law of Inertia (1st law)
The Law of Acceleration (2nd law)
The Law of Conservation of Momentum
Action Reaction Law (3rd law)
8 N to the left , and 4 N to the right. Find the net force. Are the forces in equilibrium?
12 N Right No
4 N Left No
12 N Right Yes
4 N Left Yes
A ball rolls off a table top and strikes the floor as shown. Given the measurements made, the time the projectile spent in the air is ---.
17 s
0.34 s
0.58 s
0.49 s
A ball drops off of a 10m building. How long did it take for it to reach the ground?
1.02s
1.42s
10s
0.98s
The individual who discovered the law of universal gravity is...
Isaac Newton
Rene Descartes
Galileo Galilei
Johannes Kepler
The _______________________ supplies the centripetal force requirement for the car to move in a horizontal circle. Without it, the car would turn its wheels but would not move in a circle (as is the case on an icy surface).
friction force
centrifugal force
normal force
applied force
An astronaut throws a wrench in space. What is the effect?
The astronaut stays still as they transferred their momentum to the wrench
The astronaut moves towards the wrench
The astronaut moves backwards with the same momentum given to the wrench
Nothing, there are no wrenches in space.
what is 'g' of earth
9.8
10
6.67*10-11(that is power -11)
6.67
A basketball that is thrown to the ring follows a path that is ______________.
hyperbolic
parabolic
linear
circular
What happens to the vertical velocity of a projectile as it goes up?
increases
decreases
stays the same
none of these
How will this object move?
It won't move.
It will accelerate to the right.
It will accelerate to the left.
It will accelerate in both directions.
A student is investigating the force of friction between a piece of wood and the floor of his science classroom. He pulls a 150 Newton piece of wood across the floor with a 20 Newton force. If the object is sliding with a constant speed, which of the following statements can the student make?
The force of friction must be equal to 20 Newtons or the piece of wood would accelerate.
The piece of wood is experiencing a 150 Newton force of friction in the opposite direction as it moves.
The scale must be wrong because the student would need 150 Newtons to move the piece of wood.
The frictional force on the piece of wood must be less than 20 Newtons or the block would not slide.
In the future, astronauts may land on Mars. The gravitational field strength on Mars is about 1/3 of the gravitational field strength on Earth. What affect will this have on the astronauts?
Their mass will be about 1/3 of their mass on Earth, but their weight will be the same.
Their weight will be about 1/3 of their weight on Earth, but their mass will be the same.
Their mass and weight will be about 1/3 of their mass and weight on Earth.
Their mass and weight will be the same as their mass and weight on Earth.
Draw the free body diagram of a person riding an elevator that is accelerating upward (make sure the length of the arrows is proportionally correct).
Convert 6 m to cm
60 cm
600 cm
6000 cm
0.6 cm
Convert 3000 g to kg
0.3 kg
3 kg
30 kg
300 kg
Match each term with its formal physics definition
Displacement
The position of an object relative to its starting location
Velocity
The rate of change of displacement
Acceleration
The rate of change of velocity
Vector
A quantity with a magnitude and a direction
Scalar
A quantity with magnitude, but no direction
A cat starts running across the room. She starts from rest, and reaches her top speed of 12 m/s in 0.4 seconds. What is the cat's acceleration? [include units; write seconds squared as s2]
(a)
An object starts its motion at rest. This means that its initial velocity is:
(a)
Usain Bolt's world record is 100m in 9.69 seconds, set at the Beijing Olympics. What was his average velocity while running this race? [Round to two decimal places, include units]
(a)
A car pulls onto the highway. It accelerates at 2 m/s2, merges over a distance of 100 m, and ends with a velocity of 28 m/s. What was its initial velocity? (Round to two decimal places and use correct units.)
(a)
A projectile is launched with an initial velocity of 10 m/s at an angle of 40 degrees above the horizontal. What is its initial y-velocity? (Round to two decimal places, include units)
(a)
A projectile is launched with an initial vertical velocity (y-component) of 6 m/s. How long will it take to hit the ground? (Use g=9.81 m/s2, round your answer to 2 decimals, and include units)
(a)
Invent a 1-D kinematics question, and write it below. Start by picking three values to be your knowns, and one to be your unknown, then make a physical description of what's happening.
If you exert
a net force of 8 N on a 2-kg object, what will its acceleration be?
Which FBD is most appropriate for describing the following situation?
A driver releases his foot off the gas and steps on the brake as he approaches a stoplight.
Which FBD is most appropriate for describing the following situation?
A book sits on top of the table, motionless.
Calculate the net force acting upon the object.
10N, north
20N, south
10N, south
22.4N, north
What would the acceleration of m2 be if m1 was 4 kg and m2 is 5kg?
1.1 m/s/s, down
1.1 m/s/s, up
.92 m/s/s, down
.92 m/s/s, up
