The speed of a 5,000kg,
stationary vehicle, quickly increases under the influence of a 3,890N force.
a) What is the acceleration of the vehicle?
b) What is its speed after 4 seconds?
Assume no friction
Step
1 Calculate the acceleration.
acceleration = f/m = 3,890/5,000 = 0.78m/s/s
Step 2
The speed after 4 seconds is
0.78 X 4 = 3.11m/s
Correct
acceleration= 0.78m/s/s, speed after 4 seconds = 3.11m/s
Incorrect
The formula you should use for
acceleration is
a =f/m
speed = acceleration X time
Incorrect
The formula you should use for
acceleration is
a =f/m
speed = acceleration X time
Force and acceleration a=f/m |
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The
speed of a 5,000kg, stationary vehicle, quickly increases under the influence
of a 3,890N force.
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Need help.