Question

An object of mass 40 g is sliding with a constant velocity of 20 m/s on a frictionless horizontal table.
Find the force required to keep the object moving with the same velocity?

Answer 1

Answer:

0.8 newton

Explanation:

Given :-

1. Mass = 40 g = 0.04 kg

2. Acceleration = 20 m/s

3. Force = ?

Force = mass of the object × Acceleration.

= 0.04 × 20 = 0.8 newton

hope it is helpful.

Answer 2

Explanation:

here net force should be zero ( I think)

because here body moves in constant velocity means there is no acceleration

force due to gravity can be 0.392N

force due to friction may be 10.6 N

sorry if it is wrong