suvat questions in 1 dimension

A runner accelerates from rest at 3.4 m s^-2 for 3.0 s. She then maintains a steady velocity for the rest of the 100 m race.

How far does she travel during the acceleration? Give your answer to an appropriate number of significant figures.

A runner accelerates from rest at 3.4 m s^-2 for 3.0 s. She then maintains a steady velocity for the rest of the 100 m race.

What velocity does she reach? Give your answer to an appropriate number of significant figures.

A runner accelerates from rest at 3.4 m s^-2 for 3.0 s. She then maintains a steady velocity for the rest of the 100 m race.

How long in total does she take to reach the finish line? Give your answer to an appropriate number of significant figures.

A sandbag is dropped from a height of 150 m, from a hot air balloon that is moving upwards with a velocity of 5.0 m s^-1. ignore air resistance.

What is the initial velocity (in m s^-1) of the sandbag.

Give you answer WITHOUT the unit and to an appropriate number of significant figures.

A sandbag is dropped from a height of 150 m, from a hot air balloon that is moving upwards with a velocity of 5.0 m s^-1. ignore air resistance.

How long will the bag take to reach the ground?

Give you answer to an appropriate number of significant figures.

An aircraft is at rest at one end of a runway which is 2.2 km long. The aircraft accelerates along the runway with an acceleration of 2.5 m s^-2 until it reaches it's take-off speed of 75 m s^-1.

Calculate the time taken to reach take-off speed.

Give your answer to an appropriate number of significant figures.

An aircraft is at rest at one end of a runway which is 2.2 km long. The aircraft accelerates along the runway with an acceleration of 2.5 m s^-2 until it reaches it's take-off speed of 75 m s^-1.

Calculate the distance traveled in this time.

Give your answer to an appropriate number of significant figures.

An aircraft is at rest at one end of a runway which is 2.2 km long. The aircraft accelerates along the runway with an acceleration of 2.5 m s^-2 until it reaches it's take-off speed of 75 m s^-1.

Just as the aircraft reaches take-off speed, a warning light comes on in the cockpit. The maximum possible deceleration of the aircraft is 4.0 m s^-2 and 2.5 s elapses before the pilot takes any action, during which time the aircraft continues at its take off speed. Determine whether or not the aircraft can be brought to rest in the remaining length of runway.

DO NOT use any rounded numbers in your calculations.

• They will stop in time

• They will not stop in time

An aircraft is at rest at one end of a runway which is 2.2 km long. The aircraft accelerates along the runway with an acceleration of 2.5 m s^-2 until it reaches it's take-off speed of 75 m s^-1.

Just as the aircraft reaches take-off speed, a warning light comes on in the cockpit. The maximum possible deceleration of the aircraft is 4.0 m s^-2 and 2.5 s elapses before the pilot takes any action, during which time the aircraft continues at its take off speed.

How much runway did they have to spare?

Give your answer to 2 significant figures.

DO NOT use any rounded numbers in your calculations.

A spacecraft which is landing on the Moon, uses its engines to keep its speed of descent constant at 5.0 m s^-1 from the time when the craft is 14 m above the Moon's surface until it is 4.0 m above the surface. The engines are then switched off and the spacecraft falls freely to the Moon's surface. The acceleration of free fall on the Moon's surface is 1.6 m s^-2.

Calculate, for the spacecraft, the speed of impact in m s^-1.

DO NOT give a unit with your answer.

State your answer to an appropriate number of significant figures.