Ke and Velocity Graphs

Which 2 cars have the same kinetic energy?

• The green car (3000 kg) at 80 km/h and the blue car (500 kg) at 140 km/h.

• The green car (3000 kg) at 40 km/h and the blue car (500 kg) at 140 km/h.

• The green car (3000 kg) at 40 km/h and the blue car (500 kg) at 80 km/h.

• The green car (3000 kg) at 80 km/h and the blue car (500 kg) at 60 km/h.

Tags

NGSS.HS-PS3-2

How fast would the pink object (2 kg) have to travel to have its kinetic energy equal the kinetic energy of the green object (4 kg) when the green object is moving at 6 m/s?

• about 6 m/s

• about 5 m/s

• about 9 m/s

• about 7 m/s

If the velocity is constant, what type of relationship will you see in a kinetic energy vs. mass graph?

• Linear

• non-linear

How much kinetic energy does the green car

(3000 kg) have when it is moving at 100 km/h?

• 1200

• 1200 kg

• 1200 Joules

• 1200 m/s

Tags

NGSS.HS-PS3-2

Approximately how much kinetic energy does the green object (4 kg) have when its moving at 3 m/s?

(CLUE: It has 72 Joules of energy at 6 m/s)

• 16 Joules

• 17 Joules

• 18 Joules

• 19 Joules

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Assume the blue car (500 kg) has 200 Joules of kinetic energy at 120 km/h. How much kinetic energy will it have at 240 km/h?

• 200 Joules

• 1600 Joules

• 400 Joules

• 800 Joules

Tags

NGSS.HS-PS3-2

The velocity of the 6 kg object is 1 m/s and it has about 3 Joules of kinetic energy. How much kinetic energy will a 12 kg object have moving at 1 m/s?

• 6 Joules

• 12 Joules

• 18 Joules

• 24 Joules

Tags

NGSS.HS-PS3-2

How much kinetic energy does the pink object

(2 kg) have at 6 m/s?

• 36

• 36 m/s

• 36 J

• 36 kg

The green car (3000 kg) has about 1600 Joules of kinetic energy when its moving at 120 km/h. How much kinetic energy would a 6000 kg car have moving at 120 km/h?

• twice as much

• three times as much

• four times as much

• I can't tell, it's not on the graph

What type of relationship do you see between the kinetic energy and the velocity of an obejct?

• Linear

• Non-linear