A car is driving through a city. When will it have no energy in its kinetic energy store? When it is going round a roundabout When it is slowing down When it is driving on a straight road When it is parked in a car park When it is speeding up

## Step 1:The term "kinetic energy" refers to the energy which an object possesses when it is in motion. It can be defined by the formula:### where is the mass of the object and is its velocity. This equation tells us that any object will have kinetic energy as long as it is moving i.e., velocity value should be more than zero.## Step 2: The question then becomes, when will the car not have kinetic energy in its store? Considering our definition and formula for kinetic energy, the answer will be when the car's velocity is zero. ## Step 3: Examining each of the given situations:- "When it is going round a roundabout" , the car typically would have motion leading to some kinetic energy.- "When it is slowing down", even though slowing down, the car speeds are above zero meaning it will still have some kinetic energy.- "When it is driving on a straight road"; as too, the car is in motion here implying kinetic energy.- "When it is parked in a car park", in this scenario, clearly, the car has no motion (i.e., velocity now equals to 0) meaning because v=0.- "When it is speeding up". Even though varying, at every moment of traveling the speed of the car is more than zero and hence it includes a value of kinetic energy.By understanding every situation, we conclude that a car only has no kinetic energy in its store when it is stationary or in other words parked in a car park.