Forces and motion review

Review

Review

The motion of this scooter is ...

1. uniform motion
2. acceleration
3. deceleration

This graph depicts

1. acceleration
2. uniform motion
3. deceleration
4. standing still

This graph depicts

1. acceleration
2. uniform motion
3. deceleration
4. standing still

This graph depicts

1. acceleration
2. uniform motion
3. deceleration
4. standing still

This graph depicts

1. acceleration
2. uniform motion
3. deceleration
4. standing still

You are pushing a crate with a force of 900 N, the crate is moving with a constant speed.

How big are the resisting forces?

1. 0 N
2. 300 N
3. 600 N
4. 900 N

10 m/s = ... km/h

1. 3,6
2. 36
3. 10 000
4. 2,8

Calculate the distance traveled.

1. 1000 m
2. 1150 m
3. 1320 m
4. 1530 m

Calculate the average speed

1. 10 m/s
2. 15 m/s
3. 18 m/s
4. 20 m/s

Calculate the acceleration

1. 0.17 m/s^2
2. 6 m/s^2
3. 0.33 m/s^2
4. 3 m/s^2

In which of the two cases is the distance covered the greatest?

1. Left
2. Right

1. 1.7 m/s^2
2. 2.2 m/s^2
3. 1.3 m/s^2
4. 0.6 m/s^2

Calculate the acceleration

500 N

350 N

670 kg

friction = 450 N

Fres = 500 + 350 - 450 = 400 N

Fres = m x a

400 = 670 x a 

a = 400/670 = 0.6 m/s²

A resultant force of 26 N works on an object. Due to this, the object accelerates at 0.24 m/s^2.

Calculate the mass of this object.

1. 6.25 kg
2. 108.3 kg
3. 0.009 kg
4. 51.4

Given:

Asked:

Solution:

Fres<0

Fres>0

Fres=0

90 km/h = ... m/s

1. 9
2. 25
3. 324
4. 900000

A runner increases his velocity from 1.5 m/s to 2.3 m/s in 4 seconds. Calculate the acceleration.

1. 0.2 m/s^2
2. 0.4 m/s^2
3. 0.6 m/s^2
4. 3.2 m/s^2

A drone accelerates for 2 seconds at 3 m/s^2. If the drones initial velocity was 4 m/s what will then be its final velocity?

1. 6 m/s
2. 7 m/s
3. 9 m/s
4. 10 m/s

What type of movement is part C

1. uniform
2. acceleration
3. deceleration
4. speeding

At a resultant force of 0 N you can still have movement.

1. right
2. wrong

Which item does not influence braking distance when crashing.

1. seatbelts
2. crumple zone
3. cage construction
4. airbag