SUVAT Equations

A cyclist travelling at a speed of 4.2 m s^-1 accelerates at 1.1 m s^-2. In a time of 7.4 s, the distance travelled is

• 30 m

• 35 m

• 61 m

• 91 m

Tags

NGSS.HS-PS2-1

A freely falling object on Earth has a speed of 5.0 m s^-1. After falling a further 20 m, its speed it

• 15 m s^-1

• 20 m s^-1

• 25 m s^-1

• 45 m s^-1

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A bus is travelling at a speed of 9.0 m s^-1. It then accelerates at a rate of 0.75 m s^-2 for a time of 8.0 s. What therefore is its final speed?

• 6.0 m s^-1

• 15 m s^-1

• 17 m s^-1

• 21 m s^-1

Tags

NGSS.HS-PS2-1

The acceleration of free fall on a certain planet is 8.0 m s^-2. An object gets dropped from a height and hits the ground after 1.5 s. From what height must the object have been dropped?

• 6.0 m

• 9.0 m

• 11 m

• 12 m

Tags

NGSS.HS-PS2-4

A ball is dropped from rest from a building 35.0 m high. If air resistance is neglected, then the ball will hit the ground with a speed of

• 8.4 m s^-1

• 13.1 m s^-1

• 18.5 m s^-1

• 26.2 m s^-1

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A student is asked to solve the following problem:

An object is thrown upwards with a speed of 25 m s^-1. How high will it be when the speed is 12 m s^-1 ?

Which equation will allow the problem to be solved in a SINGLE calculation?

• $s=ut+\frac{1}{2}at^2$

• $s=\frac{\left(u+v\right)t}{2}$

• $v=u+at$

• $v^2=u^2+2as$

A marble is dropped from the roof of a building and takes 3.2 s to reach the ground.

The approximate height of the building is

• 16 m

• 31 m

• 50 m

• 100 m

Tags

NGSS.HS-PS2-4

A girl dropped a stone into an empty well. She heard the sound of the stone hitting the bottom of the well after 4 seconds.

The depth of the well is about

• 20 m

• 40 m

• 80 m

• 160 m

THINK CAREFULLY ABOUT THIS ONE. DRAW A DIAGRAM TO HELP YOU..!

A building has 5 floors. The windows on successive floors are separated by the same vertical distance. A brick is dropped from a window on each floor at the same time. The bricks should hit the ground at

• decreasing time intervals

• equal time intervals

• increasing time intervals

• the same time

Tags

NGSS.HS-PS2-1

The acceleration due to gravity on Mars is 3.7 m s^-2.

If an object on Mars is launched vertically upwards with an initial speed of 40 m s^-1, its speed after 3.0 s will be

• 11 m s^-1

• 29 m s^-1

• 36 m s^-1

• 51 m s^-1

Tags

NGSS.HS-PS2-1