Question

10 suppose a tennis player hits a tennis ball with an impulse of 85 n*s. if the time of impact remains the same but the force is tripled, how will the impulse change?
a the impulse will decrease to 0.
b the impulse will remain the same.
c impulse will divide by 3.
d the impulse will triple.

Explanation:

Impulse is defined as the product of force (\(F\)) and time (\(t\)), so \(I = F\times t\). Initially, the impulse \(I_1 = F_1\times t_1 = 85\space N\cdot s\). When the force is tripled (\(F_2 = 3F_1\)) and time remains the same (\(t_2 = t_1\)), the new impulse \(I_2 = F_2\times t_2 = 3F_1\times t_1 = 3I_1\). So the impulse triples.

Answer:

D. The impulse will triple.