Physics Sem 1 Review part1

Front

Convert 2,500,000 N to scientific notation.

Back

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing total distance by total time.

Front

What does mega (M) represent in terms of powers of ten?

Back

Front

When a car’s velocity is positive and its acceleration is negative, what happens to the car’s motion?

Back

The car slows down.

Front

What does the slope on a velocity-time graph represent?

Back

The slope represents acceleration.

Front

What is the formula for calculating speed?

Back

Speed = \frac{Distance}{Time}.

Front

Define acceleration.

Back

Acceleration is the rate of change of velocity per unit time.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force is the Newton (N).

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object, calculated as Weight = Mass \times g, where g is the acceleration due to gravity.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic Energy (KE) = \frac{1}{2} mv^2, where m is mass and v is velocity.