Answers to be included in next post
If
the speed of a moving object is doubled, which quantity also associated with
the object must double?
A.
Momentum
B.
KE
C.
Gravitational potential energy
D.
Acceleration
.A 45 kilogram bicyclist climbs a hill at a constant speed of 2.5 meters per
second by applying an average force of 85 Newtons. Approximately how much power
does the bicyclist develop?
A.
115 W
B.
210 W
C.
250 W
D.
320 W
A person kicks in a 4.0 kilogram door with a 48 Newton force causing the door
to accelerate at 12 meters per second squared. What is the magnitude of the force
exerted by the door on the person?
A.
24 N
B.
35 N
C.
42 N
D. 48 N
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