Position-Time Graph

A position-time graph of an athlete winning the 100-m run is shown. Estimate the time taken by the athlete to reach 65 m.

• 6.0 s

• 6.5 s

• 5.5 s

• 7.0 s

From the following position-time graph of two brothers running a 100-m run, analyze at what time do both brothers have the same position. The smaller brother started the race from the 20-m mark.

• 2 s

• 4 s

• 6 s

• 8 s

Where was runner A located at t=0 seconds?

• at origin

• at 50 m from origin

• at -50 m from origin

• at 100 m from origin

The horizontal line on a Position - Time graph indicates that the object is ___________.

• Speeding up

• Slowing down

• at Rest

• moving at a constant speed

The slope of a Position -Time graph gives __________.

• Velocity

• Displacement

• Acceleration

• Distance

In a Position-Time Graph, a straight line slope indicates that the object is __________.

• moving with constant speed

• speeding up

• slowing down

• resting

What is the speed of the object between 25 to 60 seconds?

• 4 m/s

• 2m/s

• 0 m/s

• 5 m/s

In which section does the object travelling the fastest?

• A

• B

• C

Line A indicates that the object is _______.

• Speeding up in positive direction

• Speeding up in negative direction

• moving at constant speed in negative direction

• moving at constant speed in positive direction

Describe the signs of velocity and acceleration of an object given by this Position-time graph.

• velocity = positive, accel = zero

• velocity = negative, accel = negative

• velocity = positive, accel = negative

• velocity = negative, accel = zero