Readers ask: Suppose A Car Moves At Constant Speed Along A Hilly Road Where Does The Car Exert Quiz?

When a car moves at constant speed on a straight road?

The acceleration of a car that travels in a straight line at a constant speed of 100 km/h is zero. Average acceleration = (change in velocity)/(time it takes). Since the car’s change in velocity is zero, its acceleration is zero.

Is a car turning at a constant speed accelerating?

For example, if a car turns a corner at constant speed, it is accelerating because its direction is changing. The quicker you turn, the greater the acceleration. So there is an acceleration when velocity changes either in magnitude (an increase or decrease in speed) or in direction, or both.

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Will the acceleration of a car be the same when a car travels around a sharp curve at a constant 60 km/h as when it travels around a gentle curve at the same speed?

6) Will the acceleration of a car be the same if it travels around a sharp curve at 60 km/hr as when it travels around a gentle curve at the same speed? Answer: No the acceleration will be greater for the sharp curve than for the gentle curve.

What is true about a car with constant speed?

An object’s acceleration is the rate its velocity (speed and direction) changes. Therefore, an object can accelerate even if its speed is constant – if its direction changes. If an object’s velocity is constant, however, its acceleration will be zero. Since it travels in a straight line, its direction does not change.

What forces act on a car at constant speed?

For example, when a car travels at a constant speed, the driving force from the engine is balanced by resistive forces such as air resistance and friction in the car’s moving parts. The resultant force on the car is zero.

What is constant speed?

Definition: When the speed of an object remains the same – it does not increase or decrease – we say it is moving at a constant speed.

Can u go around a curve with constant acceleration?

Can you go around a curve with constant acceleration? No, because the vector always points to the center of the circle and you are always changing the direction of that vector.

Can a body have uniform speed but still have acceleration?

Since speed is equal to the magnitude of the velocity vector, it will also be constant. Again, since the acceleration is the rate of change of velocity of a body with time, if the velocity is constant, the acceleration of the body will be zero. Hence, a body can have a constant speed and still be accelerating.

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What is tangential acceleration formula?

The tangential acceleration = radius of the rotation * its angular acceleration. It is always measured in radian per second square. Its dimensional formula is [T2]. When an object makes a circular motion, it experiences both tangential and centripetal acceleration.

How many accelerators do you have in your car there are at least three controls?

Thus, your car actually has at least 3 accelerators: (1) the foot pedal called the “accelerator”, that changes the magnitude of the velocity, (2) the brake, which also changes the magnitude of the velocity, and (3) the steering wheel, which changes the direction of the velocity!

At which point a B or C is the normal force acting on the car the largest?

The normal force on the car is largest at point C. In this case, the centripetal force keeping the car in a circular path of radius R is directed upward, so the normal force must be greater than the weight to provide this net upward force. (b) The normal force is smallest at point A, the crest of the hill.

Which pulls harder the earth on the moon or the moon on the earth explain?

Which pulls harder gravitationally, the Earth on the moon or the moon on the Earth? The gravitational force on the moon due to the earth is only about half the force on the moon due to the sun.

Does constant speed mean no acceleration?

The velocity vector is constant in magnitude but changing in direction. Because the speed is constant for such a motion, many students have the misconception that there is no acceleration. For this reason, it can be safely concluded that an object moving in a circle at constant speed is indeed accelerating.

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What is the acceleration of light at 300 000 m s?

Its direction does not shift because it moves in a straight line. Light’s velocity never varies since both its speed and direction are unchanged, so its acceleration is zero.

What is a situation where you can accelerate even though your speed doesn’t change?

Acceleration therefore occurs whenever an object changes direction- for example, a car driving around a roundabout is constantly accelerating even if its speed does not change.

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