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WorksheetsAccelerated Motion
Total questions: 45
Worksheet time: 3570secs
Name
Class
Date
1.
initial v=5 m/s, final v=0 m/s, time is 20 seconds, how do you calculate the acceleration?
a)
(0-5)/20
b)
(5-0)/20
c)
5/20
d)
20/(5-0)
2.
A car accelerates from a standstill to 70 m/s in 10 seconds. What is the acceleration?
a)
0.7m/s2
b)
7m/s2
c)
14m/s2
d)
none of the above
3.
A roller coaster accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds. What's the acceleration?
a)
24 m/s2
b)
18 m/s2
c)
16 m/s2
d)
16 m/s
4.
A drag racer accelerated from 0 m/s to 200 m/s in 5 s. What was the acceleration?
a)
0 m/s
b)
40 m/s2
c)
-40 m/s2
d)
40 m/s
5.
The SI unit for acceleration is
a)
mph
b)
ft/sec2
c)
m/s2
6.
What is happening in this graph from point B to C?
a)
The object is going down a hill.
b)
The object is returning to its starting location.
c)
The object is slowing down.
d)
The object is staying still.
7.
What is happening in the graph from point O to A?
a)
The object is moving SLOWLY
b)
The object is moving FAST
c)
The object is NOT moving
d)
The object is accelerating
8.
What is happening in this graph from point A to B?
a)
The object is accelerating.
b)
The object is not moving.
c)
The object is decelerating.
d)
The object is moving at a constant speed.
9.
The rate at which velocity changes is called
a)
motion
b)
average speed
c)
instantaneous speed
d)
acceleration
10.
Acceleration of an object happens when things ________
a)
slow down
b)
go faster
c)
change direction (turn)
d)
All of the above
11.
g is defined as
a)
the fastest that an object can fall
b)
acceleration of objects moving vertically
c)
acceleration caused by gravity
d)
the force of gravity on an object
12.
If a car is traveling forward at 15 m/s, how fast will it be going in 1.2 seconds if the acceleration is -10 m/s2?
a)
27 m/s
b)
3 m/s
c)
-27 m/s
d)
-3 m/s
13.
free fall is?
a)
falling and the only thing acting on you is air resistance
b)
falling and the only force acting on you is gravity
14.
How much time would it take for an object to fall 4.7 meters? (free fall, and use 9.8m/s2 for g, not 10)
a)
0.959 s
b)
4.7 s
c)
0.979 s
15.
1. An object free falls for 3.5 seconds. How far does it fall?
a)
120.05 m
b)
17.15 m
c)
60.03 m
d)
34.3 m
16.
1. An object free falls for 3.5 seconds. Given only this information, what equation is used to find the speed?
a)
v=gt
b)
v=d/t
17.
If you throw a baseball straight up, what is its acceleration at the highest point?
a)
9.8 m/s2 downward
b)
9.8 m/s2 upward
c)
0 m/s2
18.
If you throw a baseball straight up, what is its velocity at the highest point?
a)
9.8 m/s2
b)
9.8 m/s
c)
0 m/s2
d)
0 m/s
19.
An object is projected horizontally from a cliff. The time it takes to hit the ground is
a)
more than if it was just dropped
b)
less than if it was just dropped
c)
the same amount of time than if it was just dropped
d)
impossible to determine
20.
A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the speed of the ball when caught would be
a)
less than the speed it had when thrown upwards.
b)
more than the speed it had when thrown upwards.
c)
the same as the speed it had when thrown upwards.
21.
Suppose an object is in free fall. Each second the object falls
a)
the same distance as in the second before.
b)
a larger distance than in the second before.
c)
with the same instantaneous speed.
d)
with the same average speed.
22.
If you drop a feather and a coin at the same time in a tube filled with air, which will reach the bottom of the tube first?
a)
the feather
b)
neither
c)
the coin
23.
If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by
a)
about 5m/s
b)
about 10m/s
c)
about 15m/s
d)
a variable amount
24.
An object accelerates at 2 m/s2. Assuming the object starts from rest, how much time does it need to accelerate to a speed of 16 m/s?
a)
4 s
b)
8 s
c)
16 s
d)
1/16 s
25.
A heavy object and a light object are dropped from the same height. If we neglect air resistance, which will hit the ground first?
a)
Heavier object
b)
Lighter object
c)
Both
26.
A freely falling object starts from rest. After falling for 6 seconds, it will have a speed of about:
a)
6m/s
b)
30m/s
c)
60m/s
d)
300m/s
27.
An airplane lands on a runway with a velocity of 150 m/s. How far will it travel until it stops if its rate of deceleration is constant at -3 m/s2?
a)
525 m
b)
3750 m
c)
6235 m
d)
9813 m
28.
What is happening between 2 and 3 seconds?
a)
The object is not moving.
b)
The object is not accelerating.
c)
The object is slowing down.
d)
The object is speeding up.
29.
What is happening between 3 seconds and 4 seconds?
a)
The object is moving in a negative direction.
b)
The object is returning to its starting position.
c)
The object is slowing to a stop.
d)
The object is changing direction.
30.
What happens at 4 seconds?
a)
The object changes direction.
b)
The object is at the starting point.
31.
What is happening between 4 and 5 seconds?
a)
The object is slowing down in a negative direction.
b)
The object is slowing down in a positive direction.
c)
The object is slowing down in a negative direction.
d)
The object is speeding up in a negative direction.
32.
True or False...A negative acceleration means that the object is slowing down.
a)
True
b)
False
33.
Between the 5th and 7th seconds the slope of the graph is positive but the velocity is negative. What does this mean?
a)
The acceleration is positive and the object is speeding up.
b)
The acceleration is positive and the object is slowing down.
34.
The red line shows...
a)
A stationary object.
b)
An object with constant velocity.
35.
Which lines show slowing down during the whole time?
a)
orange and green
b)
blue and pink
c)
just orange
d)
just green
36.
Which lines show a change in direction?
a)
Green only
b)
Blue and red
c)
orange and pink
d)
green and pink
37.
Which lines show positive velocity and negative acceleration for at least some part of the time?
a)
pink, blue and red
b)
green and orange
c)
only orange
d)
only pink
38.
Find the displacement of an object that starts at rest and increases speed to 10 m/s with an acceleration of 2 m/s2.
a)
2.5m
b)
25m
c)
50m
d)
100m
39.
Find the final velocity of an object that starts at rest and accelerates at a rate of 5m/s2 over a distance of 10m.
a)
10m
b)
25m
c)
50m
d)
100m
40.
Find the displacement of an object that starts at rest and accelerates at a rate of 2 m/s2 for 3 seconds.
a)
1m
b)
3m
c)
6m
d)
9m
41.
Find the initial velocity of an object that accelerated for 10 seconds at 5 m/s2 and had a final velocity of 70m/s.
a)
0 m/s
b)
10 m/s
c)
20 m/s
d)
50 m/s
42.
What is the acceleration of the object during the first 2 seconds?
a)
0.5m/s2
b)
1.0 m/s2
c)
1.5 m/s2
d)
2.0 m/s2
43.
A ball is thrown downward from the top of a roof with a velocity of -25 m/s. (note that up is positive and down is negative) After 2 s, its velocity will be:
a)
19.6 m/s
b)
-5.4 m/s
c)
-44.6 m/s
d)
44.6 m/s
44.
Find the displacement in the first 4 seconds.
a)
8 meters
b)
4 meters
c)
2 meters
d)
5 meters
45.
Find the total displacement in the 7 seconds of motion.
a)
1 meter
b)
0 meters
c)
9 meters
d)
12 meters
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