Question

1. A ball of mass 200 g is in motion along a straight line with a velocity of 81 km h-?. What is its momentum
2. Calculate the velocity of a toy car of mass 250 g so as to have a momentum of 0.05 kg m s -1
3. How much force is needed to accelerate an object of mass 3.5 kg with uniform acceleration of 4.0 m 52
4. A car starts from rest and under a constant accelerating force, it acquires a velocity of 3 m sin 5 seco
mass of the car and passengers be 1800 kg calculate the magnitude of force
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Answer 1

Answer:

momentum = 4.5kgm/s

Explanation:

m = 200g

= 0.2kg

v = 81km/h

=22.5 m/s

P = mv

= 0.2 kg ×22.5m/s

= 4.5kgm/s