Assignment – 2 (Motion)
Q.1. If a car is moving with a speed of 120 km/h for one hour and for next
one hour car is moving with a speed of 80 Km/h. Find the average speed of car
in km/h and meter/sec ?
Q.2. If a car is moving with a speed of 56 km/h for one hour and for
next one hour car is moving with a speed of 42 Km/h. Find the average speed of
car in km/h and meter/sec ?
Q.3. If a car is starting moving with a speed of 26 m/sec and if the
acceleration is 4 m/sec. Find the speed after 10 sec and also find the distance
after 10 sec?
Q.4. If a car is start moving from rest and get a speed of 26 m/sec. Find
the distance after 10 sec?
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Q.6. If a ship cross a river in 20 sec with a average speed of 42 m/sec and
return in 40 sec with same speed. Find the distance covered by ship and also
find the Average Velocity of the ship.
7. A bullet of mass 25 gram hits a target with 50 m/sec and stop in 0.02
sec.
a). The distance covered by bullet before stopping.
b). Force exerted by target on bullet.
8. A bullet of mass 25 gram hits a target with 150 m/sec and stop in 0.04
sec.
a). The distance covered by bullet before stopping.
b). Force exerted by target on bullet.
9. If a car is moving with initial velocity of 84 km/h and sudden applying
break and velocity decreases to 54 km/h in 10 sec. Find the acceleration of
car.
10. If a car is moving with initial velocity of 112 km/h and sudden
applying break and velocity decreases to 72 km/h in 20 sec. Find the
acceleration of car.
11. A body of mass 72 Kg start moving from rest and covered a distance of
1600 mm. with a acceleration of 20 m/ sec^2. Find final velocity of body and
also find the momentum of body.
12. A ball of mass 225 g moving with velocity of 20 m/sec and hits another
ball of mass 4kg (rest). Find the combined velocity of balls after collision.
13. A car of mass 56 kg moving with velocity of 20 m/sec for 20 sec and
hits tree wall. Find the distance covered by car and also find the impact
force.
14. A ball of mass 280 g moving with velocity of 20 m/sec and hits another
ball of mass 4kg (rest). Find the combined velocity of balls after collision.
15. A car of mass 75 kg moving with velocity of 20 m/sec for 20 sec and
hits tree wall. Find the distance covered by car and also find the impact
force.
16. If a car is
moving with initial velocity of 140 km/h and sudden applying break and velocity
decreases to 90 km/h in 10 sec. Find the acceleration of car.
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