Question

. A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the. A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the
velocity of the ball the instant before it hits the ground?

Answer 1

Answer:

30m/s

Explanation:

• Use formula for height calculation: Time = √2h/√g
• From here calculate height which comes out to be: 45m(if g is taken 10)
• Then use formula for velocity calculation: v = √2gh

• The velocity comes out to be 30m/s