A crate has a mass of 15 kg. If it travels from rest over a distance of 40 meters in 5 seconds, what force is applied to the crate?
Options
A
240 N
B
120 N
C
75 N
D
48 N
Answer & Analysis
Answer
D
Analysis
To find the force applied to the crate, we
first need to determine its acceleration using the kinematic equation for
distance traveled under constant acceleration:
Where:
is the distance (40 meters),
is the initial velocity (0 m/s, since
it starts from rest),
is the time (5 seconds),
is the acceleration.
Since the initial velocity is 0, the
equation simplifies to:
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