IGCSE Describing Motion

What is the formula to calculate speed?

• Speed = Distance - Time

• Speed = Time / Distance

• Speed = Distance / Time

• Speed = Distance * Time

What is the difference between speed and velocity?

• Speed and velocity both have direction and magnitude

• Velocity is a scalar quantity, while speed is a vector quantity

• Speed is a scalar quantity, while velocity is a vector quantity.

• Speed and velocity are the same thing

A car travels 200 km in 4 hours. What is its average speed?

• 100 km/h

• 150 km/h

• 50 km/h

• 25 km/h

What is the formula to calculate acceleration?

• a = (v + u) / t

• a = v * t - u

• a = v / (t - u)

• a = (v - u) / t

Explain the concept of distance-time graph.

• A distance-time graph shows the temperature changes over time

• A distance-time graph shows how the distance traveled by an object changes over time.

• A distance-time graph represents the speed of an object at a specific point in time

• A distance-time graph measures the weight of an object as it moves

What is the SI unit of acceleration?

• m

• m/s^2

• cm/s

• km/h

A train accelerates from rest at 2 m/s^2 for 10 seconds. Calculate its final velocity.

• 5 m/s

• 20 m/s

• 15 m/s

• 25 m/s

What is the difference between uniform and non-uniform motion?

• Uniform motion covers equal distances in equal intervals of time, while non-uniform motion covers equal distances in unequal intervals of time.

• Uniform motion covers unequal distances in equal intervals of time, while non-uniform motion covers equal distances in equal intervals of time.

• Uniform motion covers equal distances in equal intervals of time, while non-uniform motion covers unequal distances in equal intervals of time.

• Uniform motion covers equal distances in unequal intervals of time, while non-uniform motion covers equal distances in equal intervals of time.

Explain the concept of velocity-time graph.

• A velocity-time graph shows the relationship between distance and time for an object's motion.

• A velocity-time graph shows the relationship between temperature and time for an object's motion.

• A velocity-time graph shows the relationship between weight and time for an object's motion.

• A velocity-time graph shows the relationship between velocity and time for an object's motion.

A ball is thrown vertically upwards. What is its acceleration at the highest point?

• 9.81 m/s^2

• 4.9 m/s^2

• 2.5 m/s^2

• 0 m/s^2