A 1-kg ball is thrown straight up at 10 m/s.Neglecting air resistance,the net force that acts on the ball when it is halfway to the top of its path is
A)1/2 N.
B)1 N.
C)5 N.
D)7.5 N.
E)10 N.

Question

Quizplus · Accepted Answer

The net force acting on the ball at any point in its trajectory (ignoring air resistance) is due to gravity alone, which can be calculated using F = ma, where m is the mass (1 kg) and a is the acceleration due to gravity (approximately 10 m/s^2). This gives a force of 10 N.

A 1-Kg Ball Is Thrown Straight Up at 10 M/s