Week 2 Assessment: Acceleration & Graphing Motion

What does acceleration describe?

• Speed in a straight line

• Change in direction only

• Rate of change in velocity

• How long something moves

What is the formula for acceleration?

• a = v + t

• a = (v_f - v_i) ÷ t

• a = v × t

• a = distance ÷ time

What is the unit for acceleration?

• m/s

• m²

• m/s²

• s/m

If an object’s speed changes from 5 m/s to 15 m/s in 5 seconds, what is its acceleration?

• 1 m/s²

• 2 m/s²

• 3 m/s²

• 5 m/s²

What does a horizontal line on a speed-time graph represent?

• Acceleration

• Deceleration

What does the slope of a position-time graph represent?

• Acceleration

• Direction

• Speed

• Time

Which graph shows a change in speed over time?

• Position-time graph

• Temperature-time graph

• Speed-time graph

• Mass-time graph

What is negative acceleration also called?

• Increasing motion

• Displacement

• Deceleration

• Negative velocity

What kind of motion does a curved line show on a position-time graph?

• No motion

• Constant speed

• Changing speed

• Constant acceleration

Which of the following shows acceleration?

• A car moving at a constant speed

• A parked bicycle

• A person jogging at a steady pace

• A rocket speeding up after launch