Question

1 poir
4. Calculate the force exerted
by the motorcar that is moving
with a velocity of 72 km/h and
takes 5 s to stop after the
application of brakes. Mass of
the motorcar along with the
passengers is 800 kg.
19
N​

Answer 1

Answer:

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Answer 2

Answer:

ANSWER

Force=mass*acceleration

f=m×

t

v−u

f=1000×

4

0−108×

18

5

=1000×(−7.5)

∴f=−7500N

opposing force is denoted by negative sign.