Kinematics #6 - Acceleration and Graphs - Sea Raptal

Define acceleration

• Change in velocity over time
• Change in position over time
• Change in speed over time
• Change in displacement over time

Tags

NGSS.HS-PS2-1

Which of these is NOT a way a sea raptal might accelerate as it tries to escape you.

• Change it's position relative to you
• Speed up relative to you
• Slow down relative to you
• Change the direction it is swimming

Give the equation for constant acceleration

• a=∆x / ∆v
• a=∆v / ∆x
• a=∆v / ∆t
• a=∆x / ∆t

Tags

NGSS.HS-PS2-1

What is the SI Unit for acceleration?

• meters (m)
• meters per second (m/s)
• Meters per second squared (m/s^2)
• Newtons (N)

What information does acceleration’s (+) or (-) sign tell you?

• Distance (d)
• Displacement (∆x)
• Change in velocity (∆v)
• Direction

Tags

NGSS.HS-PS2-1

A sea raptal is swimming away with (+) v and (+) a.  Is it speeding up, slowing down, or at constant speed?

• Staying at constant speed
• speeding up 
• slowing down 
• More information is needed to answer!

A sea raptal is swimming towards you with (-)v and (+)a. Is it speeding up, slowing down or at a constant speed?

• Staying at constant speed
• Speeding up
• Slowing Down
• Not enough information to answer this!

Tags

NGSS.HS-PS2-1

A sea raptal is swimming towards you with (-)v and (-)a. Is it speeding up, slowing down or at a constant speed?

• Staying at a constant speed
• Speeding up
• Slowing down
• Not enough information to answer this!

Tags

NGSS.HS-PS2-1

A Sea Raptal can swim at top speeds of 180mph (80.5m/s)!!!  What is its average acceleration if a raptal goes from 0m/s to 80.5m/s in 30s?

• 0.089 m/s^2
• 0.37 m/s^2
• 1.34 m/s^2
• 2.68 m/s^2

Sea raptals will come on land to hunt large prey.  Your horse is being surrounded by raptals on the beach! How long will it take your horse to stop if your initial v=+11m/s and a= -1.81m/s^2?

• 0.16s
• 0.16m
• 6.1s
• 6.1m