Write two examples of uniform circular motion

When air exits a balloon filled with air, the balloon moves against the airflow. Explain its action and reactions?

If a car with a 1000 kg mass and a bus with a mass of 2000 kg travel at the same speed, what momentum is greater? Why?

A car traveling with an acceleration of 5 m/s² starts moving from rest and travels 75 m by 25 s. Calculate final velocity of the car

What is the magnitude of the momentum of a motorcycle of a mass of 100 kg at rest?What is its momentum if this motorcycle when it travels at 40 m / s?

Write the relation between mass and inertia of an object.

Classify the following instances into  inertia of motion and inertiaof rest.

1.When a running bus stops suddenly, passengers tend to fall forward

 2. A fan rotates for a while even after it is switched off.

 3.The mango falls down when braches are shaked.

 4.it is possible to strike out a single carrom coin stacked one over the other without disturbing others

Find the first word pair relationship and complete the second word pair.

momentum; Kgm/s

Impulse:----------------

Write the reason

a) When the pole vault jumps, the impact is reduced by falling on the foamhead.

b) A cricketer lowers his hands while catching ball in order to increase time of catching.

Pick out the correct one

The direction of acceleration of an object in uniform circular motion is---------------

a) Towards the centre of circular path

b) Away from the centre of circula path

c)Along tangent to the circular path

d) nor acceleration

The same amount of force is applied for 4s in an object with mass of 10 kg. Calculate the force applied if the velocity of the object increases from 6 m / s to 14 m / s.

Write the reason

     1. Overloading vehicles is prohibited by law.

    2. It is difficult to roll a filled tar barrel than an empty one..

A car traveling at a speed of 90 Km (25 m / s) per hour, stops after 3 s when the brake is aplied. If mass of the car including passengers is 1200 kg, what is the force applied when the brake is operated?

Find out the reason

a. Standing passengers tend to fall forward when the running bus stops abruptly.

b. When the parked bus suddenly starts motion , the passengers fall backward.