Answer:
B) Its velocity is perpendicular to the acceleration.
Explanation:
For general projectile motion, the horizontal acceleration is 0 and the vertical acceleration is -g. This is true for all points on the trajectory.
At the highest point, the vertical velocity is 0. So you have only a horizontal velocity as well as a vertical acceleration. So the two are perpendicular.
Answer:
The impulse of the net force on the ball during its collision with the wall is 25N
Explanation:
Step one :
Given data
Mass =5kg
Velocity v1=10m/s
Velocity v2=5m/s
The equation for impulse is given as
P=m(v1-v2)
Where P =impulse
Substituting our values into the equation we have
P=5*(10-5)
P=5*5
P=25N
The impulse 25N
What is impulse?
Impulse is the change of momentum of an object when the object is acted upon by a force for an interval of time.
