Question

A projectile of mass $0.5kg$ is thrown with a velocity of $30m/s$ at an angle of ${60}^{\circ }$ with the horizontal. Find the net force acting on the body.

• A. $9.8N$
• B. $6.5N$
• C. $4.9N$
• D. $20N$

Answer 1

The correct option is C $4.9N$

There is no force acting in the horizontal direction (acceleration is zero), but gravity acts downwards. Hence, net force $F=mg=0.5\times 9.8=4.9N$