Velocity of a ball (kg) droped from height (m)

AI Thread Summary
To determine the greatest velocity of a 0.5 kg ball dropped from a height of 5 m, two approaches can be utilized: the energy approach and the kinematics approach. The energy approach states that the potential energy at the height converts entirely into kinetic energy just before impact. The kinematics approach involves using time-independent equations to calculate the final velocity. The gravitational acceleration is given as 9.8 m/s², which is essential for both methods. Additional guidance can be provided if needed, as the problem is straightforward.
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Homework Statement



A ball of mass 0.5kg is dropped from a height of 5m what is the greatest velocity it will have just before hitting the ground?

Homework Equations



f=m*g
a= change in velocity/change in time


The Attempt at a Solution


m=.5kg
h=5m
a=9.8m/s

f=m*g
f= .5*9.8= 4.9N

I don't know what other equations to use to find velocity
 
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You can solve this one of two ways:

Energy approach: Energy at highest point is equal to the kinetic energy at the lowest point, since all potential energy is converted to kinetic as the ball is about to hit the ground.

Kinematics approach: Use the time independent kinematics equation.

Post if you need more specific guidance, because this is a relatively simple problem.
 
You can also use these equations together to solve:
d=0.5at2+v_{i}t+d_{i}
a=\frac{Δv}{Δt}.
 
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