Question

5. How much force is needed to stop a 1,400 kg truck pulling up to a stop light if

the truck took 4 seconds to stop and was moving at 36 m/s?

Answer 1

Explanation:

F=ma

F=m(dv/dt)

F=1400(-36/4)

F=-12600N (the negative sign just means the force was slowing the vehicle, the magnitude of the force is just the absolute value.

F=12600N