Gr 10 Physical Sciences Ch 17: Kinetic energy

What is the energy possessed by an object due to its motion?

Thermal energy
Kinetic energy (correct)
Potential energy
Electrical energy

What is the unit of kinetic energy?

Kilogram
Joule (correct)
Meter per second
Newton

What is the formula to calculate kinetic energy?

E_K = mv
E_K = mv^3
E_K = 1/2 mv^2 (correct)
E_K = 2mv^2

What is the effect of increasing the mass of an object on its kinetic energy?

It increases (B) Signup and view all the answers

What happens to the potential energy of an object as it falls?

It decreases (B) Signup and view all the answers

What is the relationship between the velocity of an object and its kinetic energy?

Kinetic energy increases with the square of the velocity (A) Signup and view all the answers

What is the definition of kinetic energy in terms of the unit?

Energy measured in joules (C) Signup and view all the answers

What is the significance of the velocity in the kinetic energy of an object?

It is a significant factor (C) Signup and view all the answers

What is the effect of increasing the velocity of an object on its kinetic energy?

It increases by a factor of four (D) Signup and view all the answers

What happens to the kinetic energy of an object as it loses potential energy?

It increases (C) Signup and view all the answers

What is the relationship between the mass and kinetic energy of an object?

Kinetic energy increases linearly with the mass (D) Signup and view all the answers

What is a characteristic of an object with a high kinetic energy?

It has a high velocity (A) Signup and view all the answers

What is the result of the conversion of potential energy into kinetic energy?

The object maintains its energy (C) Signup and view all the answers

What is the significance of the mass in the kinetic energy of an object?

It increases the kinetic energy (C) Signup and view all the answers

What happens to the kinetic energy of two objects with the same velocity but different masses?

The heavier object has more kinetic energy (B) Signup and view all the answers

What is the condition when an object has maximum kinetic energy?

When it is at the lowest point (C) Signup and view all the answers

Which of the following factors does NOT affect the kinetic energy of an object?

Color of the object (C) Signup and view all the answers

What happens to the kinetic energy of an object as it gains velocity?

It increases (B) Signup and view all the answers

Why does a heavy truck have more kinetic energy than a lighter car moving at the same speed?

Because of its greater mass (B) Signup and view all the answers

What is the result of the energy transformation as an object falls?

Kinetic energy increases and potential energy decreases (B) Signup and view all the answers

What is the relationship between the kinetic energy of two objects with the same mass but different velocities?

The one with higher velocity has more kinetic energy (C) Signup and view all the answers

Why is velocity a significant factor in the kinetic energy of an object?

Because it increases with the square of velocity (A) Signup and view all the answers

What is the condition when an object has zero kinetic energy?

When it is at rest (A) Signup and view all the answers

What is the unit of measurement for the mass of an object in the formula for kinetic energy?

Kilograms (B) Signup and view all the answers

What is the main reason why a car traveling at 60 km/h has more kinetic energy than a bicycle traveling at 10 km/h?

Because the car has a higher velocity squared (D) Signup and view all the answers

An object is dropped from a height of 50 meters. What happens to its kinetic energy as it falls?

It increases as the object's potential energy decreases (B) Signup and view all the answers

Which of the following statements is true about kinetic energy?

It is directly proportional to the velocity of an object (A) Signup and view all the answers

Two objects, A and B, have the same velocity but different masses. Which object has more kinetic energy?

Object B, because it has a higher mass (B) Signup and view all the answers

What is the condition when the kinetic energy of an object is maximum?

When its velocity is maximum (A) Signup and view all the answers

An object has a mass of 20 kg and a velocity of 5 m/s. What is its kinetic energy?

125 J (D) Signup and view all the answers

Which of the following is a unit of kinetic energy?

Joule (C) Signup and view all the answers

As an object falls from a height, its potential energy is converted into which type of energy?

Kinetic energy (C) Signup and view all the answers