Question

Grizzly the cat (mass = 7.0 kg) was walking along at 1.3 m/s, when out of nowhere a vicious dog called Cedric (poodle) started to chase Griz. If Griz increased her speed to 10.3 m/s in 0.5 s, determine the force exerted by Griz in the acceleration.

Answer 1

m = 7.0 kg
v(initial) = 1.3 m/s
v(final) = 10.3 m/s
t = 0.5 s
\[a = \Delta v / \Delta t\]so a = (10.3-1.3)/0.5 = 9/0.5 = 18 m/s^2
\[F = ma\]so F = (7)(18) = 126 N

Answer: F = 126 N

Answer 2

thx so much