Hooke's Law, Newton second law of motion, acceleration motio

A change in velocity over time is called ___________.

• speed
• force
• acceleration
• direction

Which two quantities are both vector quantities?

• Force and speed

• Speed and deceleration

• Extension and Acceleration

• Velocity and displacement

According to Hooke's law; Force is equal to -

• Spring Constant × Extension

• Spring Constant ÷ Extension

• Spring Constant + Extension

A bungee rope has a spring constant of 5N/m. How much a person must weighs in Newton if we want it to extend (stretch) 10m?

• 20N

• 22N

• 50N

• 21N

• A

• B

• C

• D

A cyclist records his speed and the distance travelled during a journey. He then plots the data against time for different sections of his journey. Which graph shows a section when he is moving with constant speed?

• A

• B

• C

• D

• A

• B

• C

• D

The velocity of an electric car changes as shown.

What is the acceleration of the car?

• 15000N and 25ms-2

• 15000N and 11m/s2

• 15000N and 10.52ms-2

• 15000N and 10ms-2

A car travels along a horizontal road at a constant speed. Three horizontal forces act on the car.The diagram shows two of these three forces.

What is the size and the direction of the third horizontal force acting on the car?

• 1200 N backwards

• 1200 N forwards

• 800N Forward

• 800 N backwards