According to work energy theorem, the work done by the car is zero. Since the kinetic energy does not change and the car is moving along a straight horizontal road the work done is zero only if there is no non conservative force like friction.
When a car is moving straight on a levelled road with constant speed then net force acting on it_________*?
The net work and the net force on the car traveling at constant velocity will be 0 since there is no acceleration. However, the engine of the car will always have to exert some force/do some work in order to overcome the force/work done by friction in the direction opposite of the car’s momentum.
Which of the following energies is not present when a car is moving at a constant speed in a level road?
kinetic energy
The kinetic energy (K) depends upon the car’s speed. If a car’s not moving, then there is no kinetic energy. If a car moves with constant speed, then the kinetic energy is constant.
What is the work done in a moving car?
The net work done on the car is therefore zero. The problem you posted involves Newton’s law of inertia which states that a body tends to move in a straight line at constant velocity unless a net force is acting on it. If a net force is acting on it then the body will accelerate.
Does a car’s kinetic energy change more when the car speeds up from 10 to 15 m/s or from 15 to 20 m/s explain?
Answer and Explanation: The kinetic energy changes more if the car goes from 15 m/s to 20 m/s.
Why does a driver increases the velocity of his car when the car approaches an uphill road?
When a vehicle is moving on a flat road, it has to do work to overcome the friction of road and the air resistance but no work is done against force of gravity. Therefore, the drivers increase the speed of vehicles on approaching a hilly road.
Is there a net force on the car as it rounds the curve?
A car rounds a curve while maintaining a constant speed. Is there a net force on the car as it rounds the curve? No. Its speed is constant.
What is the name of the force that keeps an object in circular motion?
When an object moves in a circular path it changes into direction and velocity at every point. The force that causes this velocity or acceleration is called centripetal force. It always acts in the inwards direction i.e, towards the center.
Is it possible for a system to have energy if nothing is moving in the system?
Is it possible for a system to have energy if nothing is moving in the system? Yes. A system that has all its energy in the form of potential energy is such a system. Potential energy depends on position relative to a reference point.
How does the work needed to stretch a spring 2 cm compare to the work needed to stretch it 1 cm?
How does the work required to stretch a spring 2 cm compare with the work required to stretch it 1 cm? The elastic potential energy is 1/2 kx2. So in the second case, the elastic PE is 4 times greater than in the first case. Thus, the work required to stretch the spring is also 4 times greater.
How are two cars moving in the same direction?
Two cars P and Q are moving in the same direction along the same straight horizontal road. Car P is moving with constant speed 25 m s-l. At time t = O, P overtakes Q which is moving with constant speed 20m s-l. From t = T seconds, P decelerates uniformly, coming to rest at a point X which is 800m from the point where P overtook Q.
What happens when a car is moving along a horizontal road?
Since kinetic energy doesn’t change and the car is moving along horizontal road the work done is zero Only if there is no nonconservative force like friction. If there is friction then the work done is friction force X displacement. Doing this every morning can snap back sagging skin (no creams).
How does a car drive along a frictionless road?
A car drives along straight level frictionless road by an engine delivering constant power. Then velocity is directly proportional to ? . . Was this answer helpful?
What is the speed of a car in leave blank?
4. Leave blank A car is moving along a straight horizontal road. At time t = O, the car passes a point A with speed 25 m s-l. The car moves with constant speed 25 m s-l until t = IOS. The car then decelerates uniformly for 8 s.
