A golfball comes to rest 1.9 seconds after hitting a net. The force of the net slowed down at a rate of 56.3 m/s2. What was the velocity of the ball when it first hit the net??
106.97
2+2
To find the velocity of the ball when it first hit the net, we can use the equation of motion:
v = u + at
Where:
v = final velocity
u = initial velocity
a = acceleration
t = time
We are given that the ball comes to rest after hitting the net. Therefore, the final velocity (v) is 0 m/s. The time (t) is given as 1.9 seconds. The acceleration (a) is given as -56.3 m/s^2 because it is slowing down.
Plugging in the values:
0 = u + (-56.3) * 1.9
Now, we can solve for u which represents the initial velocity.
Rearranging the equation, we get:
u = - (-56.3) * 1.9
u = 107.17 m/s
Therefore, the initial velocity of the ball when it first hit the net is 107.17 m/s.