Here's my second problem that i couldn't find the answer to
Two cars are traveling along a straight line in
the same direction, the lead car at 24 m/s and
the other car at 37 m/s. At the moment the
cars are 57 m apart, the lead driver applies the
brakes, causing the car to have a deceleration
of 1.5 m/s2.
How long does it take for the lead car to
stop?
Answer in units of s
Two cars are traveling along a straight line in
the same direction, the lead car at 24 m/s and
the other car at 37 m/s. At the moment the
cars are 57 m apart, the lead driver applies the
brakes, causing the car to have a deceleration
of 1.5 m/s2.
How long does it take for the lead car to
stop?
Answer in units of s
-
This is really just a one-body problem involving the lead car. The other car does not participate in the breaking of the lead car at all.
Basically, the lead car is moving at 24 m/s and decelerates at 1.5 m/s^2 to zero. The time required is simply
( 24 m/s ) / ( 1.5 m/s^2 ) = 16 seconds
Basically, the lead car is moving at 24 m/s and decelerates at 1.5 m/s^2 to zero. The time required is simply
( 24 m/s ) / ( 1.5 m/s^2 ) = 16 seconds