If a stone of mass 0.05 kg is thrown out a window of a train moving at a constant speed of 100 km/h then magnitude of the net force acting on the stone is

Question

If a stone of mass 0.05 kg is thrown out a window of a train moving at a constant speed of 100 km/h then magnitude of the net force acting on the stone is (A) 0.5 N (B) zero (C) 50 N (D) 5 N

Tardigrade Admin · Accepted Answer

After the stone is thrown out of the moving train, the only force acting on it is the force of gravity i.e. its weight. ∴ F=m g=0.05 × 10=0.5 N.

Q. If a stone of mass $0.05 k g$ is thrown out a window of a train moving at a constant speed of $100 km / h$ then magnitude of the net force acting on the stone is

0.5 N

zero

50 N

5 N

After the stone is thrown out of the moving train, the only force acting on it is the force of gravity i.e. its weight.
$∴ F = m g = 0.05 \times 10 = 0.5 N$ .

Q. If a stone of mass 0.05kg is thrown out a window of a train moving at a constant speed of 100km/h then magnitude of the net force acting on the stone is

0.5 N

zero

50 N

5 N

After the stone is thrown out of the moving train, the only force acting on it is the force of gravity i.e. its weight. ∴F=mg=0.05×10=0.5N.

Q. If a stone of mass $0.05 k g$ is thrown out a window of a train moving at a constant speed of $100 km / h$ then magnitude of the net force acting on the stone is

After the stone is thrown out of the moving train, the only force acting on it is the force of gravity i.e. its weight.
$∴ F = m g = 0.05 \times 10 = 0.5 N$ .