Impulse and Impulsive ForceExample 1
A car of mass 600kg is moving with velocity of 30m/s. A net force of 200N is applied on the car for 15s. Find the impulse exerted on the car and hence determine the final velocity of the car.
Answer: Impulse = F × t = (200) × (15) = 300oNs Impulse = mv  mu
Example 2
A car of mass 1000kg is traveling with a velocity of 25 m/s. The car hits a street lamp and is stopped in0.05 seconds.
What is the impulsive force acting on the car during the crash?
Answer: \begin{gathered}
{\text{Impulsive Force,}} \hfill \\
F = \frac{{m(v  u)}}
{t} \hfill \\
F = \frac{{1000(0  25)}}
{{0.05}} \hfill \\
F = 500,000N \hfill \\
\end{gathered}
High Jump
Table of Content


