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Lesson Worksheet: Impulse and Momentum Mathematics
In this worksheet, we will practice relating the impulse on a body to the change of momentum of the body.
A body of mass 5 kg fell vertically from rest. It reached the water’s surface after 2.2 seconds. Then, as it moved through the water, it descended vertically at a constant speed such that it covered 3.9 m in 1.5 seconds. Find the magnitude of the change in its momentum as a result of its impact with the water.
A sphere of mass 83 g fell vertically from a height of 8.1 m onto a section of horizontal ground. It rebounded and reached a height of 3.6 m. Given that the duration of the impact was 0.42 seconds, and the acceleration due to gravity is 9.8 m/s2, find the average impact force to the nearest two decimal places.