DUA 3 Energy & Momentum Review Quizizz

A block of mass m is moved over a distance d. An applied force F is directed perpendicularly to the block’s displacement. How much work is done on the block by the force F?

• mFd

• Zero

• Fd

• F/d

A light plane travels a distance of 150 m along a runway before takeoff. Find the work done by the plane engine if it is applying a force of 13500 N. ( W =Fd )

• 2,025,000 J

• 90 J

• 2,025,000 N

• 90 N

Tags

NGSS.HS-PS2-1

A motorcycle has 10 J of kinetic energy. If its velocity is doubled, how much kinetic energy does it now possess?

• 15 J

• 20 J

• 35 J

• 40 J

Tags

NGSS.HS-PS3-1

• 1.2 J

• 0.024 J

• 2.4 J

• 2.0 J

Tags

NGSS.HS-PS3-1

The elastic force as a function of displacement presented by the graph. How much elastic potential energy is stored in the spring when it is stretched by 10 cm? ( Science measures displacement in meters. ) A_Δ =1/2bh

• 0.1 J

• 0.2 J

• 0.3 J

• 0.4 J

Tags

NGSS.HS-PS3-1

A horizontal spring is used to launch a 2.0 kg ball. The spring is compressed by 0.25 m and has a spring constant k of 1,000 N/m. What is the maximum speed of the ball? This is a conservation of energy problem (EPE = KE )

Mathematical Equivalence

ON

Tags

NGSS.HS-PS3-1

A horizontal spring is used to launch a 2.0 kg ball. The spring is compressed by 0.25 m and has a spring constant k of 1,000 N/m. What is the maximum speed of the ball? This is a conservation of energy problem (EPE = KE )

• 5.6 N/m

• 5.6 m/s

• 5.6 N

• 5.6 kg

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

In the Energy Skate Park simulation, The energy changes from gravitational potential energy, to kinetic energy, & finally thermal energy. The energy in the system is closed & conserved, so the total amount of energy is ​ .​ ​ ​ ​ (a)  

• conserved
• decreasing
• increasing
• unknown

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

• 5.6 kg m/s

• 5.1 kg m/s

• 0.176 m/s

• 5100 kg m/s

Tags

NGSS.HS-PS2-1

A tennis ball approaches a racket with a momentum of 5 kg·m/s and bounces back with a momentum of 6 kg·m/s after the collision with the racket. What is the change in momentum of the tennis ball?

• 1 kg·m/s    

• 5 kg·m/s  

• 6 kg·m/s    

• 11 kg·m/s  

Tags

NGSS.HS-PS2-2