WorksheetsProject 1 Midpoint Review
Total questions: 21
Worksheet time: 29mins
Name
Class
Date
1.
A car traveling in a straight line has a velocity of 5 m/s at some instant. After 2 s, its velocity is 11 m/s. What is its average acceleration in this time interval?
a)
3 m/s2
b)
5.5 m/s2
c)
2.5 m/s2
d)
5 m/s2
2.
A car accelerates from rest at 2 m/s2. How much time does it need to attain a speed of 10 m/s?
a)
10 s
b)
8 s
c)
5 s
d)
2 s
3.
If the acceleration of an object is zero at some instant in time, what can be said about its velocity at that time?
a)
It is zero.
b)
It is changing.
c)
It is positive.
d)
More info is needed.
4.
A car is at the edge of its driveway facing away from the street. Its owner pulls the car into the driveway. As the car starts from rest and gains speed up to 5 mph pulling into the driveway, its
a)
acceleration points to the front of the car and its velocity points to the front.
b)
acceleration points to the back of the car and its velocity points to the back.
c)
acceleration points to the front of the car and its velocity points to the back.
d)
acceleration points to the back of the car and its velocity points to the front.
5.
A rocket-driven sled running on a straight, level track has been used to study the physiological effects of large accelerations on astronauts. One such sled can attain a speed of 100 m/s in 3 s starting from rest. How far does the sled travel in 3 s, starting from rest?
a)
300 m
b)
50 m
c)
100 m
d)
150 m
6.
A 2000 kg car has a speed of 10 m/s when it hits a tree. The tree doesn’t move and the car comes to rest. Find the change in kinetic energy of the car.
a)
200000 J
b)
100000 J
c)
20000 J
d)
10000 J
7.
A 2000 kg car has a speed of 10 m/s when it hits a tree. The tree doesn’t move and the car comes to rest. Find the amount of work done by the car as its front is pushed in.
a)
200000 J
b)
20000 J
c)
100000 J
d)
10000 J
8.
A 2000 kg car has a speed of 10 m/s when it hits a tree. The tree doesn’t move and the car comes to rest. Find the magnitude of the force of the collision if it pushed the front of the car in by 50 cm.
a)
100000 N
b)
10000 N
c)
20000 N
d)
200000 N
9.
A complete CER answer to an open-ended question will have a minimum of __ sentences.
a)
1
b)
2
c)
3
d)
4
10.
A claim is a single sentence that directly answers the question.
a)
true
b)
false
11.
The part of CER that lists the reasons for making the claim is called _____.
a)
claim
b)
evidence
c)
reasoning
12.
The part of CER that fully explains the logic behind the claim is called ______.
a)
claim
b)
evidence
c)
reasoning
13.
The slope of a position graph is
a)
velocity
b)
acceleration
c)
distance
d)
force
14.
The slope of a velocity graph is
a)
velocity
b)
acceleration
c)
distance
d)
force
15.
Work and energy both have units of ____.
a)
J
b)
N
c)
kg
d)
W
16.
You are carrying a heavy backpack down the hall. What will happen to the energy of the system containing you and the backpack?
a)
It will increase.
b)
It will decrease.
c)
It will stay the same.
d)
More information is needed.
17.
You lower a heavy box down from a high shelf. What will happen to the energy of the box as it is lowered?
a)
It will increase.
b)
It will decrease.
c)
It will stay the same.
d)
More information is needed.
18.
Two objects of the same material are travelling near you. Object A is a 1 kg mass traveling 2 m/s; object B is a 2 kg mass traveling 1 m/s. Which object has more kinetic energy?
a)
Object A
b)
Object B
c)
They have the same kinetic energy.
d)
More information is needed.
19.
Suppose an automobile has a kinetic energy of 1000 J. When it moves with three times the speed, what will be its kinetic energy?
a)
3000 J
b)
9000 J
c)
333 J
d)
111 J
20.
A car is traveling with a kinetic energy of 1000 J. A second car is half as massive, but traveling twice as fast. What is the kinetic energy of the second car?
a)
500 J
b)
4000 J
c)
2000 J
d)
1000 J
21.
How far does a car travel while accelerating from 4 m/s to 10 m/s at a rate of 2 m/s2?
a)
12 m
b)
42 m
c)
24 m
d)
21 m
100 %
