Question

A 2kg pumpkin is thrown with a velocity of 15m/s towards a brick wall. The pumpkin comes to a crashing rest (0m/s) in 0.05 seconds. What is the force exerted on the pumpkin by the wall?

Answer 1

The force exerted on the pumpkin by the wall is 600 N

From the question given above, the following data were obtained:

Mass (m) = 2 Kg

Initial velocity (u) = 15 m/s

Final velocity (v) = 0 m/s

Time (t) = 0.05 s

Force (F) =?

The force exerted on the pumpkin by the wall can be obtained as follow:

$f = \frac{m(v + u)}{t} \\ \\ f = \frac{2(0 + 15)}{0.05} \\ \\ f = \frac{2 \times 15}{0.05} \\ \\ f = \frac{30}{0.05}$

F = 600 N

Therefore, the force exerted on the pumpkin by the wall is 600 N

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