A mother pushes a baby stroller 50 meters by applying 10 newtons of force. How much work was done?
Answer.- 500 joules
Answer:
1.53 s
Explanation:
Initially vertical component of velocity of the ball, uy = 7.5 m/s
Net displacement is vertical direction is zero, Δy =0
Use second equation of motion:
Δy = uy t + 0.5 a t²
Here, acceleration a = -g (g =9.8 m/s²)
Substitute all the values and solve for g
0 = 7.5 t -0.5 (9.8)t²
7.5 t = 4.9 t²
t = 1.53 s
Oooo that ones hard. ummm... idk i think we should just leave it to the experts ya know.
