What is the momentum of the two cars after collision if its momentum before collision is 50 kg? Let, P = Momentum of car 2 after the collision. Total initial momentum = Initial momentum of car 1 + Initial momentum of car 2 = 0 + 50 kgm/s = 50 kgm/s. Total final momentum = […]

What is a body of mass 1 kg moving with velocity 10m s? Mass (m)= 1 kg. Velocity (v)= 10 m/s. ∴The Kinetic Energy of the object is 50 J. ∴ The correct option is the 4th. What is the kinetic energy of a body of mass 1 kg moving with a speed of? What

When a boxer is moving away from a punch? When a boxer is moving away from a punch, the force experienced is reduced because the impact force is reduced by increasing the time of contact with the punch. The product of the force and the time of applying the force is called impulse and that

What is a 0.5 kg ball moving with a speed of 12 ms strikes? A 0.5 kg ball moving with a speed of 12 m/s strikes a hard wall at an angle of 30° with the wall. It is reflected with the same speed and at the same angle. If the ball is in contact

What was a car like in the 1920s? At the start of the decade, cars were very basic but still a vast improvement over horse and buggy. Most of the early cars were open tourers but it didn’t take long before they were enclosed and fitted with heaters to improve passenger comfort. What was the

Where is the point charge located? A point charge Q is located at centre of a fixed thin ring of radius R with uniformly distributed charge −Q. The magnitude of the electric field strength at the point lying on the axis of the ring at a distance x from the centre is (x>>R) Is a

What would be the net force on the car if it were moving to the left? A)If a car is moving to the left with constant velocity then the net force applied to the car is zero. B) An object cannot remain at rest unless the net force acting on it is zero. What acceleration

What is the average braking force of a 1000 kg car moving at 10m s? Answer: The average braking force is 2000 N. What is the average braking force of a 1000 kg car moving at 20m s? Therefore, the force applied by the brakes is 2000 N. Q. A car of mass 1000 kg

What forces act on a hockey puck on ice? A hockey puck sliding across the ice will continue to slide forever if there is no friction, but it does have external forces acting on it (gravity and the normal force, in this case). But these forces balance out, so there is no net force on

Is it possible to have a collision in which the whole KE is lost? Can all the kinetic energy be lost in the collision? Yes, all the kinetic energy can be lost if the two masses come to rest due to the collision (i.e., they stick together). Describe a system for which momentum is conserved