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24 questions
An old lady rolls down a hill at 3 meters/second. The hill is 36 meters long. How many seconds does it take the old lady to reach the bottom of the hill?
39 seconds
12 seconds
15 seconds
33 seconds
This position vs. time graph shows an object...
not moving
moving with constant velocity
moving with changing velocity
This position vs. time graph shows an object...
not moving
moving with constant velocity
moving with changing velocity
Select the description of motion from A - B.
Slowing down away from the origin
Speeding up away from the origin
Constant velocity away from the origin
Constant velocity towards the origin
What segment of the graph shows no motion, or standing still?
A - B
B - C
C - D
None
True or False: this graph shows several segments ALL with constant velocity.
True
False
Describe motion of C - D.
Constant velocity away from the origin
Slowing down away from the origin
Slowing down away from the origin and then slowing down towards the origin
Slowing down away from the origin and then speeding up towards from the origin
Describe the motion from B - C.
Standing still
Constant velocity of 60 m/min
Constant velocity of 0 m/min
Accelerating
What is the rate of acceleration of a mountain bike if it slows down from 9.4 m/s to 3.0 m/s in a time of 3.75 s?
-0.61 m/s2
-1.71 m/s2
-1.19 m/s2
-2.07 m/s2
A car parked on a hill starts to coast down the hill, accelerating from rest at a constant rate of 0.45 m/s2. How fast will the car be moving after 7.0 s?
3.15 m/s
5.07 m/s
6.97.15 m/s
7.81 m/s
A golf ball starts with a velocity of 2 m/s and SLOWS at a constant rate of 0.5 m/s2, what is its velocity after 2 s?
0 m/s
0.5 m/s
1 m/s
1.5 m/s
An airplane starts at rest, then accelerates down a runway at 4 m/s2 for 24 s until is finally lifts off the ground. Determine the velocity just as it takes off?
48m/s
24m/s
96m/s
0m/s
A boat travels 12.0 m while it reduces its velocity from 9.5 m/s to 5.5 m/s. What is the magnitude of the boat’s acceleration while it travels the 12.0 m?
1.3 m/s2
2.5 m/s2
3.0 m/s2
7.5 m/s2
How far will a car move in 5 seconds if it started from rest and accelerates uniformly at 2.5 ms-2?
12.5 m
125 m
6.25 m
31.25 m
A dog basks in the sun when he sees a squirrel and bolts after it. If the dog accelerates at +1.6 m/s2, how far does he run in 3 seconds?
4.8 meters
45 meters
1.6 meters
7.2 meters
An object with an initial velocity of 3.50 m/s moves east along a straight and level path. The object then undergoes a constant acceleration of 1.80 m/s2 east for a period of 5.00 s. How far does the object move while it is accelerating?
6.30 m
17.5 m
27.2 m
40.0 m
A boat travels 12.0 m while it reduces its velocity from 9.5 m/s to 5.5 m/s. What is the magnitude of the boat’s acceleration while it travels the 12.0 m?
-1.3 m/s2
-2.5 m/s2
-3.0 m/s2
-7.5 m/s2
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 acceleration is constant at -3 m/s2?
525 m
3750 m
6235 m
9813 m
A policeman traveling 19.5 m/s spots a speeder ahead, so he accelerates his vehicle at a steady rate of 1.81 m/s2 for 3.2 s, at which time he catches up with the speeder. What distance does the police car cover in that time?
35.98 m
56.32 m
71.67 m
91.02 m
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