It is usually the car's engine doing work.
In short: the tires. (friction) The force changes a few times to get there though. (gasoline -> chemical reaction -> pressure -> linear kinetic -> rotational kinetic)
When a car accelerates, the primary forces at play are the force of friction between the tires and the road, which propels the car forward, and the force of inertia, which resists changes in motion. Additionally, the engine generates power to overcome these forces and propel the car forward.
When a car accelerates, its velocity increases over time. This change in velocity is the result of a force being applied to the car, which causes it to speed up.
When a car accelerates from stationary to its top speed, the main forces acting on it are the driving force from the engine (propelling the car forward), frictional force between the tires and the road (opposing motion), and air resistance (opposing motion as speed increases). Additionally, the car's weight is always acting downwards.
The force that stops a car from sinking into the road is the normal force, which is the force exerted by the road surface in the opposite direction to the force of gravity. This force supports the weight of the car and prevents it from sinking into the road.
The direction of friction on an accelerating car by the road is opposite to the direction of the car's motion. As the car accelerates forward, the frictional force between the tires and the road acts in the opposite direction to resist the car's motion and provide the necessary traction for it to move forward without slipping.
-- A car accelerates in the direction of the net force on it, at a rate equal to the magnitude of the net force divided by the mass of the car. -- A stone accelerates in the direction of the net force on it, at a rate equal to the magnitude of the net force divided by the mass of the stone. -- A Frisbee accelerates in the direction of the net force on it, at a rate equal to the magnitude of the net force divided by the mass of the Frisbee. -- A baseball accelerates in the direction of the net force on it, at a rate equal to the magnitude of the net force divided by the mass of the baseball. -- A dog accelerates in the direction of the net force on it, at a rate equal to the magnitude of the net force divided by the mass of the dog. -- A book accelerates in the direction of the net force on it, at a rate equal to the magnitude of the net force divided by the mass of the book. -- A canoe accelerates in the direction of the net force on it, at a rate equal to the magnitude of the net force divided by the mass of the canoe. -- An airplane accelerates in the direction of the net force on it, at a rate equal to the magnitude of the net force divided by the mass of the airplane. -- A planet accelerates in the direction of the net force on it, at a rate equal to the magnitude of the net force divided by the mass of the planet. -- A cow accelerates in the direction of the net force on it, at a rate equal to the magnitude of the net force divided by the mass of the cow.
A non-example of balanced force is when a car accelerates uphill against the force of gravity. In this case, the force of the car's engine is greater than the force of gravity, causing the car to move uphill.
Motion of a car on a level road Forces acting on the car : 1.The weight of the car, mg 2.Normal reaction, N 3. Frictional force, f N--mg = 0 N = mg The centripetal force required for circular motion is along the surface of the road, and is provided by the component of the contact force between road and the car tyres along the surface. This force is nothing but the frictional force. The static friction that provides the centripetal acceleration. Motion of a car on a banked road We can reduce the contribution of friction to the circular motion of the car if the road is banked N cos θ = mg + f sin θ The centripetal force is provided by the horizontal components of N and f. N sin θ + f cos θ =mv2/R As you can see, the magnitude of frictional force has decreased by banking the road. Hence the wear and tear of the tyres will be less
The additional force needed to bring the car into equilibrium would be equal in magnitude and opposite in direction to the force that was providing the constant velocity. This force is the force of friction that acts to oppose the motion of the car.
One example of centripetal acceleration is when a car goes around a curve on a road. The car accelerates towards the center of the curve due to the centripetal force required to keep it moving in a curved path.
The force F = M (mass) * a (acceleration) (Newton's second law of motion)In metric units:Force: N (= mass*g) where g is approx equal 9.81 m/s^2 (depends on location, Sweden=9.819 m/s^2)mass: kgacc: m/s^sThe force must be greater than the resistance. The resistance increases with increased speed! To power a car at 40MPH requires xHP, at 80MPH it requires 8xHP!wind resistance (non linear!) (aka Cd)rolling resistance (constant) (aka Cr)etcIf you find this interesting have a look at:http://craig.backfire.ca/pages/autos/horsepowerhttp://en.wikipedia.org/wiki/Newton%27s_laws_of_motion