Question

An object is thrown vertically upward with a speed of 15 m/s. The velocity of the object 2s before it reaches the maximum height is ____________.

Options

• 4.9 m/s

• 9.8 m/s

• 19.6 m/s

• 25.1 m/s

Answer 1

An object is thrown vertically upward with a speed of 15 m/s. The velocity of the object 2s before it reaches the maximum height is 19.6 m/s.

Explanation:

For an object thrown upward, Velocity 2s before maximum height

= velocity 2s after maximum height

∴ v = u + at

= 0 + 9.8 x 2

= 19.6 mis