WorksheetsPhysics CH 4 Linear Motion
Total questions: 17
Worksheet time: 9mins
Name
Class
Date
1.
When a basketball player jumps to make a shot, once the feet leave the floor, the jumper's acceleration ...
a)
is g, no more, no less.
b)
depends on the launch speed.
c)
is greater for taller players
d)
varies with body orientation.
2.
An object travels 15 meters in the first second of travel, 15 m in its second second, and 15m in the third second. Its acceleration is...
a)
45m/s2
b)
30m/s2
c)
15m/s2
d)
0m/s2
3.
A ball is thrown straight up. At the top of the path the acceleration is...
a)
about 10m/s2
b)
0m/s2
c)
20m/s2
d)
dependant on how long it have been in the air.
4.
Suppose you take a trip that covers 180km in 3 hours. Your average speed is...
a)
30km/hr
b)
360km/hr
c)
180 km/hr
d)
60km/hr
5.
If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by
a)
5m/s
b)
a variable amount
c)
about 10m/s
d)
about 15 m/s
6.
If you drop a feather and a coin at the same time in a vacuum tube, which will reach the bottom of the tube first?
a)
the coin
b)
the feather
c)
neither, they will both hit at the same time
d)
it depends on the lentgh of the tube
7.
In the absence of air restistance, objects dall at constant
a)
velocity
b)
acceleration
c)
speed
d)
distances
8.
A ball is thrown upwards and caught when it comes back down. The speed of the ball when caught would be
a)
the same as when it was thrown
b)
more than when it was thrown
c)
less than when it was thrown
9.
A pencil lies on your desk. If the Earth is moving around the sun at a speed of 30km/s, how fast is the pencil moving relative to the desk? Relative to the sun?
a)
0km/s, 0km/s
b)
0km/s, 30km/s
c)
30km/s, 0km/s
d)
30km/s, 30km/s
10.
Suppose a minivan is moving in a straight line and steadily increases it speed. It moved from 35km/hr to 40km/hr the first second, 40 to 45 the next second. What it it's acceleration?
a)
10km/hr/s
b)
35km/hr/s
c)
5km/hr/s
d)
40km/hr/s
11.
A ball tossed vertically upward rises, reaches it highest point, and then falls back to its starting position. During this time the acceleration of the ball is always
a)
directed downward
b)
in the direction of motion
c)
directed upward
d)
opposite of its velocity
12.
A ball is thrown straight up. At the top of its path it's instantaneous speed is...
a)
about 5m/s
b)
about 10 m/s
c)
about 20m/s
d)
0m/s
13.
Suppose you are in a car that is going around a curve, the speedometer reads a constant 30mph. Whis is NOT true?
a)
Your speed is constant
b)
Your velocity is constant
c)
Your acceleration is constant
d)
Your acceleration is not changing
14.
A freely falling object starts from rest, after falling for 15s it will have a speed of about...
a)
750m/s
b)
15m/s
c)
150m/s
d)
75m/s
15.
One possible unit of speed is
a)
kilometers per hour
b)
miles per hour
c)
light years per century
d)
all of these
16.
The hang time for most athletes is
a)
slightly more than 1 s
b)
less that 1 s
c)
much more than 1 s
d)
about 1 second
17.
When you look at the speedometer in a moving car, you can see the car's
a)
instantaneous speed
b)
average speed
c)
instantaneous acceleration
d)
average acceleration
100 %
