Position, velocity, speed and acceleration
Grade 12 Math Worksheet - Challenge Me

Circle the best answer, or write your answer on the line.
A toy cart is at s(t) = t³ − 9t² + 15t meters for t > 0. Ari finds when it is speeding up. Which is right?
- 1 < t < 3 or t > 5
- 1 < t < 5
- t > 3
- t > 5
A robot is at s(t) = t³ − 9t² + 24t meters for t > 0. Bo finds when it is speeding up. Which is right?
- t > 3
- 2 < t < 4
- t > 4
- 2 < t < 3 or t > 4
A toy train is at s(t) = t³ − 6t² + 9t meters for t > 0. Esme finds when it is speeding up. Which is right?
- 1 < t < 2 or t > 3
- t > 2
- 1 < t < 3
- t > 3
A sled on a track is at s(t) = t³ − 9t² + 15t meters. It stops twice. Kira finds its acceleration at the second stop. What is it, in m/s²?
A toy cart is at s(t) = t³ − 9t² + 24t meters. It stops twice. Luz finds its acceleration at the second stop. What is it, in m/s²?
A robot is at s(t) = t³ − 12t² + 21t meters. It stops twice. Milo finds its acceleration at the second stop. What is it, in m/s²?
A toy train is at s(t) = t³ − 15t² + 48t meters. It stops twice. Noah finds its acceleration at the second stop. What is it, in m/s²?
A toy train is at s(t) = 2t³ − 15t² + 24t meters. Pia finds its speed at t = 2. What is it, in m/s?
A sled on a track is at s(t) = 2t³ − 15t² + 20t meters. Ren finds its speed at t = 3. What is it, in m/s?
A toy cart is at s(t) = 2t³ − 15t² + 10t meters. Tala finds its speed at t = 1. What is it, in m/s?

