CH- FORCE AND LAWS OF MOTION by Rashmi Rai https://padlet.com/rashmirai/sj0bv4km0iy7kghp en-us 2021-04-27 15:40:21 UTC 2022-08-17 03:25:08 UTC hello@padlet.com SET 4 rashmirai https://padlet.com/rashmirai/sj0bv4km0iy7kghp/wish/2249176780 2022-07-25 08:27:56 UTC https://padlet.com/rashmirai/sj0bv4km0iy7kghp/wish/2249176780 SET 3 rashmirai https://padlet.com/rashmirai/sj0bv4km0iy7kghp/wish/2249178010 1.  If a net force of 7 N was constantly applied on 400 g object at rest, how long will it take to raise its velocity to 80 m/s?
2. A sedan car of mass 200kg is moving with a certain velocity . It is brought to rest by the application of brakes, within a distance of 20m when the average resistance being offered to it is 500N.What was the velocity of the motor car?
3. A car start from rest and acquire a velocity of 54 km/h in 2 sec. Find
(i) the acceleration
(ii) distance travelled by car assume motion of car is uniform
(iii) If the mass of the car is 1000 Kg,what is the force acting on it?]]> 2022-07-25 08:30:59 UTC https://padlet.com/rashmirai/sj0bv4km0iy7kghp/wish/2249178010 SET 2 rashmirai https://padlet.com/rashmirai/sj0bv4km0iy7kghp/wish/2249180509 1. Which would require a greater force - a body of mass 2 kg  accelerating at 5 m/s2 or another body of 6 kg mass at 2 m/s2?
2. A gun of mass 3 kg fires a bullet of mass 30 g. the bullet takes 0.003 s to move through the barrel of the gun and acquires a velocity of 100 m/s. calculate:
a)The velocity with which the gun recoils.
b)The force exerted on gunman due to recoil of the gun.
3. A motorcar is moving with a velocity of 108 km/h and it takes 4 seconds to stop after the brakes are applied. Calculate the force exerted by the brakes on the motorcar if its mass along with the passengers is 1000 kg.]]> 2022-07-25 08:37:14 UTC https://padlet.com/rashmirai/sj0bv4km0iy7kghp/wish/2249180509 SET 1 rashmirai https://padlet.com/rashmirai/sj0bv4km0iy7kghp/wish/2249181028 1. How much net force is required to accelerate a 1000 kg car at 4.00 m/s2?
2. If a net force of 7 N was constantly applied on 400 g object at rest, how long will it take to raise its velocity to 80 m/s?
3. An object of mass 10 g is sliding with a constant velocity of 2 m/ s on a frictionless horizontal table. What is the force required to keep the object moving with the same velocity?]]> 2022-07-25 08:38:59 UTC https://padlet.com/rashmirai/sj0bv4km0iy7kghp/wish/2249181028