Physics

A car accelerating constantly at 5 m s^-2. If its velocity changes from 10 m s^-1 to 25 m s^-1, calculate the time taken to reach final velocity.

• 1 s

• 4 s

• 2 s

• 3 s

Tags

NGSS.HS-PS2-1

A lorry accelerating constantly at 5 m s^-2. If its velocity changes from 10 m s^-1 to 25 m s^-1, calculate the displacement of the lorry.

• 125 m

• 33.2 m

• 52.5 m

• 41.5 m

A bus moving with an initial speed of 20 m s^-1 decelerates at a constant rate of 3 m s^-2. Calculate the distance travelled by the bus before it stops.

• 12.35 m

• 24.56 m

• 66.67 m

• 53.49 m

Tags

NGSS.HS-PS2-1

A car is capable of accelerating at 0.60 m s^-2. Calculate the time needed for this car to go from speed of 5.5 m s^-1 to a speed of 8.0 m s^-1.

• 4.17 s

• 8.34 s

• 1.03 s

• 16.67 s

Tags

NGSS.HS-PS2-1

A car initially at rest, starts moving with a constant acceleration of 0.6 ms^-2 and travels a distance of 30 m. Calculate its final velocity.

• 6 ms^-1

• 16 ms^-1

• 2 ms^-1

• 0.8 ms^-1

Tags

NGSS.HS-PS2-1

An object start from rest and then the velocity become 10 ms^-1. The word rest, refer to......

• u = 10 ms^-1

• u = 0 ms^-1

• a = 10 ms^-1

• s = 10 m

Which equation is not related to uniform accelerated motion

• v = u + at

• v² = u² + 2as

• s = ut + 1/2at²

• v = rs

Tags

NGSS.HS-PS2-1

Which of the following is accelerating?

• A cannonball sitting on the ground
• A boat traveling at a constant speed in a straight line
• A can being crushed under a person's foot
• A car going around a curve at a constant speed

Tags

NGSS.HS-PS2-1

When are you undergoing an acceleration in a car? 

• speed up
• slow down
• make turns
• All of the above 

Tags

NGSS.HS-PS2-1

Acceleration only takes place when things speed up. 

• True
• False

Tags

NGSS.HS-PS2-1