What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 seconds?

What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 seconds?

The acceleration of a car that maintains a constant velocity of 100 km/h for 10 s is zero. Acceleration is a change in velocity.

What is the net force of a car at a constant speed?

For a car or any other object to move, it must be accelerated from rest to the desired speed; this requires that the engine force be greater than the friction force. Once the car is moving at constant velocity, the net force must be zero; otherwise, the car will accelerate (gain speed).

What will be the acceleration of the car if it has a constant acceleration?

We are all familiar with the fact that a car speeds up when we put our foot down on the accelerator. For example, if the velocity of a particle moving in a straight line changes uniformly (at a constant rate of change) from 2 m/s to 5 m/s over one second, then its constant acceleration is 3 m/s2. …

What happens if a car moves at a constant speed?

Speed is a scalar quantity with magnitude but not direction while both acceleration and velocity are vector quantities, which means they have both magnitude and direction. Even if the speed is constant (meaning no change in the magnitude of the velocity) the car could be changing its direction and accelerate.

What is the acceleration of a car that maintains a constant velocity of 55 km/h for 10.0 seconds?

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20. What is the acceleration of a car that maintains a constant velocity of 55 mi/hr for 10.0 seconds? If the velocity is constant, then there is no acceleration. That is, the value of the acceleration is 0.

What is the net force on the car?

The net force acting on the car is 3×103 Newtons.

How do you find net force with mass and constant speed?

Since the speed is constant, the horizontal forces must also balance; and so Ffrict = 56.7 N. “mu”= Ffrict / Fnorm = (56.7 N) / (139.3 N) = 0.406. The Fgrav can be calculated from the mass of the object. a = Fnet / m = (29.2 N, right) / (20 kg) = 1.46 m/s/s, right.

How far does the car travel in the first 4 seconds?

So, distance travelled by car in first 4 seconds is calculated by graphical method. (a) Area of a small division on the graph Total number of small divisions under the curve up to 4 s = 1615 Area under the curve up to Therefore, the car has covered a distance of 17.2 m in first 4 s.

Can a car be moving with a constant speed of 100 km/h and still be accelerating?

In other words, acceleration tells you how quickly your speed or direction changes. Acceleration is the rate your velocity (not speed) changes. The acceleration of a car that travels in a straight line at a constant speed of 100 km/h is zero. Since the car’s change in velocity is zero, its acceleration is zero.

How do you calculate the force of friction on a car?

The math that governs this is F=CN, where F is the Frictional Force, C is the Coefficient of rolling friction, and N is the Normal Force (a force most nearly described as the weight of the car). Finally, we must take into account the relative mass of the car compared to whatever it is moving across.

How do you calculate force from mass and acceleration?

Force Equation. Newton’s second law states that force is proportional to what is required for an object of constant mass to change its velocity. This is equal to that object’s mass multiplied by its acceleration.

What force keeps a car moving at a constant speed?

That is, to travel at constant speed, there can be no net force on an object. So if there are resistive forces, one must look for a force acting on the car that would allow it to maintain constant speed. The only ‘object’ that is acting on the car in the forward direction is the road. And that force is friction between the pavement and the tires.

What is the speed of 1200 kg motorcar in 4 s?

A motorcar of mass 1200 kg is moving along a straight line with a uniform velocity of 90 km/h. Its velocity is slowed down to 18 km/h in 4 s by an unbalanced external force. Calculate the acceleration and change in momentum. Also calculate the magnitude of the force required.