a ball of mass 100g moving with a velocity 10m/s is stopped by a boy in 0 2 s - Science - Force and Laws of Motion

Question

a ball of mass 100g moving with a velocity 10m/s is stopped by a
boy in 0 2 s calculate the force applied by the boy to stop the
ball

Sonia · Accepted Answer

m = 100 g= 100/1000 = 0 1 kg
u = 10 m/s
v = 0 m/s
t = 0 2 sec
v = u+at
a = (v -u)/t = (0-10)/0 2
by removing the decimals,
-10*10/2 = -100/2 = -50 m/sec
F = ma = 0 1 (​ -50) = -5​
therefore the force needed to stop the ball is ​5 N

a ball of mass 100g moving with a velocity 10m/s is stopped by a boy in 0.2 s. calculate the force applied by the boy to stop the ball.