Question

A car moving with a speed of 108 kilometre per hour comes to rest after 4 seconds on applying brake if the mass of the car including the passengers 1000 1000 kg what will be the force applied when brake is applied

Answer 1

Answer:

-7500N

Explanation:

here, minus sign notifies that the force was applied against the direction of motion.

u= 108km/he

=30m/s

v= 0 m/s

t= 4s

v=u+at

a= -15/2 m/s^2

given, mass= 1000 kg

Force= ma

= 1000×(-15/2)

= -7500N

Answer 2

Answer:

u= 108km/he

=30m/s

v= 0 m/s

t= 4s

v=u+at

a= -15/2 m/s^2

given, mass= 1000 kg

Force= ma

= 1000×(-15/2)

= -7500N

Explanation:

hope it helps u...