In projectile motion the acceleration at the highest point of curved motion is___.

Question

a. 0 b. g c. undefined d. –g

Which is true about an object was dropped from a 5 storey building?
a. initial velocity is zero b. acceleration is equal to –g
c. displacement is negative d. All of the choices

Which is true about an object was thrown downward from a 5storey building?
a. initial velocity is zero b. acceleration is not equal to –g
c. final velocity is non zero d. All of the choices

In order for an object to accelerate,
a. there must be change in the magnitude of velocity. c. there must be uniform velocity.
b. there must be change in the direction of velocity. d. both options a and b are correct.

Answer 1

The force on this object is
F = - m g

so a = -g

What are your answers?