The increase in the speed of a car is proportional to the additional petrol put into the engine. Is it possible to accelerate a car without putting more petrol or less petrol into the engine?

You are driving a motorcycle ona horizontal raod. It is moving with a uniform velocity. Is it possibel to accelerate the motorcycle wilthout putting higher petrol input rate into the engine?

The angular velocity of the engine (and hence of the wheel) on a scooter is proportional to the petrol input per second. The scooter is moving on a frictionless road with uniform velocity. If the petrol input is increased by 10% the linear velocity of the scooter is increased by

To accelerate a car we ignite petrol in the engine of the car. Since only an external force can accelerate the centre of mass, is it proper to sasy that the fore generated by the engine accelerates the car?

A spark plug in a bike or a car is used to ignite the air - fuel mixture in the engine. It consists of two electrodes separated by a gap of around 0.6 mm gap as shown in the figure. To create the spark an electric field of magnitude 3xx10^(6)Vm^(-1) is required. (a) What potential difference must be applied to produce the spark ? ( b) If the gap is increased , does the potential defference increase decrease or remains the same the same ? ( c) find the potential difference if the gap is 1 mm .

Can you accelerate a car on a frictionless horizontal road by putting more petrol in the engine? Can you stop a car going on a frictionless horizontal road by applying brakes?

A spark plug in a bike or a car is used to ignite the air-fuel mixture in the engine. It consists of two electrodes separated by a gap of around 0.6 mm gap as shown in the figure. To create the spark, an electric field of magnitude 3xx10^(6)Vm^(-1) is required. If the gap is increased, does the potential difference increase, decrease or remains the same?