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10 questions
The length of the actual path an object moves is…
distance
speed
velocity
displacement
A motorcycles move with an initial velocity of It takes 10 s to accelerate to a velocity of 15 ms-1. What is the acceleration of the motorcycle?
0.5 ms-2
1.0 ms-2
1.5 ms-2
2.0 ms-2
When an object is accelerating, the ___________ of an object will change.
speed
mass
force
velocity
Which of the following correctly describes what happens during a free fall?
Kinetic energy is converted to potential energy.
Velocity is constant.
Acceleration is constant.
Acceleration increases with the fall.
Adam finished 100 m race in a time of 8.7 s. What was his average speed?
18.7 ms-1
11.5 ms-1
10.0 ms-1
4.4 ms-1
When velocity is constant, the acceleration is …
zero
increasing constantly
decreasing constantly
will increasing and after a few second it will decreasing
A ball is thrown upward in the air with an initial velocity of 40 m/s. How long does it take to reach back to the point it was thrown from?
4 s
6 s
2 s
8 s
When an object falls in physics world, what happens?
It accelerates at a constant rate until it hits the ground
It accelerates at a non-constant rate until it hits the ground
It accelerates at a constant rate until it reaches terminal velocity
It accelerates at a non-constant rate until it reaches terminal velocity
A freely falling object starts from rest. After falling for 6 seconds, it will have a speed of about
6 m/s
60 m/s
30 m/s
300 m/s
An object free falls for 3.5 seconds. How far does it fall?
120.05 m
60.03 m
17.15 m
34,3 m
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