Question

XA motor-car of mass 1200 kg is
moving along a straight line with a
uniform velocity of 90 km/h. Its
velocity is slowed down to 18 km/h
in 4 seconds by an unbalanced
external force. The magnitude of the
force is :​

Answer 1

Answer:

$please \: give \: me \: brainlist221. \times \frac{?}{?}$