Question

a body of mass 15 kg is moving with velocity 18.75m/s find force required to stop it in 12 sec​

Answer 1

Answer:

Explanation:

To know the force, we need to first calculate the acceleration produced by the force to stop the body moving with an initial velocity u = 18.75 m/s = 18¾ m/s = (75/4) m/s.

We know that:

v = u + a t

where,

Final velocity v = 0 m/s (as the body stops),

Initial velocity u = 75/4 m/s,

t = 12 seconds

a = (v — u)/t = (0 — 75/4)/12 = —75/48 = —25/16 m/s²

Force require = mass × acceleration = 15 × (—25/16) Newton = -375/16 N = — 23⁷/¹⁶ N.

Negative sign means that the force will decrease velocity.

Force = 23⁷/⁸ Newton.

Answer 2

Here’s the answer mark me as Brainly