Which o f the following object has the maximum inertia? A less massive object A

Question

Which o f the following object has the maximum inertia? A less massive object A fast-moving object A slow-moving object A more massive object A frklift has a mass of 975 kg. Calculate the force to be applied on it to give it an acceleration of 2.5 /s^2. 1950.2 N 3901.2 N 1329.8 N 2437.5 N A tow truck ecerts a force of 3,000 N on a car, accelerating it at 2 m/s^2. Calculate the mass of the car. 500 kg 1,000 kg 1,500 kg 3,000 kg Which of the following varies according to the gravitational pull? Force Weight Acceleration Mass The average mass of a male African elephant is 7,000 kg. Calculate its weight. 25,200 N 68,600 N 10,500 N 34,300 N

Explanation / Answer

10. d)

inertia of an object is a measure of its mass. hence more massive object will have more inertia

11 d)

m = 975 kg     and a = 2.5

force is given as

F = ma = 975 x 2.5 = 2437.5 N

12 c

F = 3000 N

a = 2 m/s2

m = F/a = 3000/2 = 1500 kg

13 b)

weight of objects depends on the amount of gravitational pull by earth.

14 b)

m = 7000 kg

g = 9.8

weight = mg = 7000 x 9.8 = 68600 N

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