How much work is done when a car moves with a uniform speed on a level road?
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.
What is the quantity that changes in a car is moving with a uniform speed?
Solution: The quantities that changes when a car is moving with a uniform speed is distance, length of the path and Position.
What is the acceleration of a car moving at the uniform speed?
An object moving at uniform or constant velocity has zero acceleration because there is no change in velocity.
What is a body moving with a uniform speed along a circle as dash velocity?
Hence, a body moving with a uniform speed along a circle has variable velocity.
How do you calculate uniform speed?
What is the uniform speed formula? We define uniform speed as the condition in which a body travels the same distance at the same time. S is the average velocity of a body during time t in equation ( d=s*t ).
What is the formula for uniform circular motion?
According to Newton’s second law of motion, a net force causes the acceleration of mass according to Fnet = ma. For uniform circular motion, the acceleration is centripetal acceleration: a = ac. Therefore, the magnitude of centripetal force, Fc, is F c = m a c F c = m a c .
What is uniform speed also called as speed?
Uniform speed is also known as constant speed. A body can travel equal distances in equal time intervals. So, the body maintains a constant speed and does not accelerate.
What is called uniform speed?
When an object covers equal distances in equal intervals of time, it is said to have a uniform speed. In the case of a uniform speed, the distance-time graph is a straight line.
When an object moves with a uniform speed then?
EXPLANATION: An object is made to move with a uniform speed such that the magnitude of its velocity remains constant with its direction of motion continuously changing with time. This is the example of a uniform circular motion.
What is the SI unit of retardation?
Answer: The SI unit of Retardation (m/s²) meter per second squared. According to the definition, Acceleration can be defined as the rate of change of the velocity of any object. Retardation is the total opposite of acceleration i.e., negative acceleration.
What is retardation class 9?
Retardation is defined as the rate of decrease of velocity with time. suppose if a car is slowing down,its velocity is decreasing,so its acceleration is negetive. But retardation is positive. Retardation is negetive of acceleration.
What is the SI unit of acceleration?
Acceleration (a) is defined as the rate of change of velocity. Velocity is a vector quantity, and therefore acceleration is also a vector quantity. The SI unit of acceleration is metres/second2 (m/s2).
What is the motion of a car on a level road?
If the car is driven at a speed greater than Vmax, then the car will skip and go off the road in a circle of radius greater than r. This is because even the maximum available friction will be in adequate to provide the necessary centripetal force.
What forces act on the car on a level road?
The two forces acting on the car are force of friction and air resistance,Force of friction contributes more to slow down and stop the car.
How much work is done to stop a car weighing 1500 kg moving with a speed of 60 km h?
Hence, work required to stop the car =12×1500×16.662 =208166.7J=208.17kJ. Was this answer helpful?
Does the engine of a car moving in horizontal road in uniform speed do any work?
Force applied by the engine of the car against friction maintains its uniform velocity . This force is doing work as displacement occurs against frication. If f= force of friction and v=velocity of the car, work done in 1s by the engine = force of friction × constant velocity =fv.