Question

A car travelling at 30 m/s on a level road. At this speed the car has to overcome a total force of 600 N opposing the car.
(a) (i) Calculate the distance travelled by the car in 10 s. (ii) State the value of the driving force produced by the engine for a steady speed of 30 m/s.
(b) Explain why the car slows down when it climbs a hill, even though the driving force is unchanged.
(c) While on the level road and travelling at 30 m/s, the driving force becomes zero. The mass of the car is 800 kg. Calculate the deceleration of the car.
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Answer 1

Answer:

5.An applied force of 50 N is used to accelerate an object to the right across a frictional surface. The object encounters 10 N of friction. Use the diagram to determine the normal force, the net force, the mass, and the acceleration of the object. (Neglect air resistance.)