Question

A sledge of mass 80kg moves over the frozen surface of a lake with a velocity of 30m/s
and comes to rest in 5sec. Find the negative acceleration and the force between the lake
and the sledger?​

Answer 1

Answer:

-6m/sec^2, -480N .

Explanation:

v = u +at

0 = 30 + a(5)

a = -6m/sec^2

f = ma

=80×-6

=-480N

the frictional force acting is 480N.