Retake Energy CSA ES3.1, 3.2, 3.5

What is the kinetic energy of a 1.5 kg toy car moving at a speed of 1.5 m/s? Hint: KE = 1/2 x mass x speed (squared)

• 1.687 Joules
• 1.7 Joules
• 1.6 Joules
• 1.6875 Joules

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A dog has a weight of 40 N. The dog can jump 1.3 meters off the ground. What is the gravitational potential energy (GPE)? Hint: weight x height above ground

• 52.5 J
• 50 J
• 52 J
• 53 J

Tags

NGSS.MS-PS3-2

Energy that produces radiation. Examples are x-rays, microwaves, cell phones.

• electrical energy
• thermal energy
• mechanical energy
• electromagnetic energy

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Plants use the process of photosynthesis to make and store their own food. What type of energy is photosynthesis?

• thermal
• mechanical
• chemical
• kinetic

Tags

NGSS.MS-LS1-6

Which is not an example of kinetic energy?

• riding your skateboard
• yoyo held in your hand
• falling down
• releasing a football in the air

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Lance weighs 48 kg and runs at a speed of 4.3 m/s. What is his kinetic energy? Hint: KE= 1/2 x mass x speed (squared)

• 443.7 J
• 443.6 J
• 443.8
• 443.76 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Coal, oil, and natural gas have high potential energies, which makes them valuable energy resources. In order to benefit from energy available in these fossil fuels, the potential energy is converted most directly into which type of energy?

• thermal
• nuclear
• solar
• electrical

Tags

NGSS.HS-PS3-3

NGSS.HS-PS3-4

Jill noticed that when she uses the brakes on her car while traveling at a slow speed, the car stops moving almost immediately. However, when the car is going much faster, it takes more time for it to come to a stop. Which is the best explanation for this observation?

• The brakes are designed to be used at low speeds.
• There is more friction between the car and the ground when the car is moving slower.
• Jill and her car have more kinetic energy at higher speeds.
• Moving at higher speeds increases the mass of the car so it requires more energy to stop its motion.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

On a roller coaster, where is the maximum potential energy?

• at the bottom of the slope
• at the top of the roller coaster
• going around corners
• going upside down

Tags

NGSS.MS-PS3-2

The faster an object moves, the _________ kinetic energy it has.

• more
• less
• it has the same
• all of the above

Tags

NGSS.MS-PS3-1