Kinematics Problems - Norwell High School



Worksheet 105- Kinematics Review Problems

H092010C

1.A skier has an initial velocity of 3.5 m/s when she accelerates downhill. She accelerates at a rate of 0.6 m/s2 over a distance of 88 m. What is her final velocity, and how long did it take her to cover that distance?

2. A baseball is pitched with an initial velocity of -36 m/s. The batter hits the ball so that it has a final velocity of +41 m/s. This change in velocity takes place in 0.125 s. What is the acceleration of the ball, and what is the displacement of the ball during this time?

3. Commodore Wilson, a Galactic Interspace Superhero, is flying in his spaceship with an initial velocity of 2.3 * 104 m/s when he detects the evil Vorkulii on his perimeter. He decides that discretion is the greater part of valor, and rapidly accelerates at a rate of 45 m/s2 for a time of 240 s. What is his displacement, and what is his final velocity?

4. Two peanuts were walking down the road, and one was assaulted.

5. A boat accelerates to a final velocity of 28 m/s. It accelerates for 15 seconds at a rate of 1.4 m/s2. What is the initial velocity, and what is the displacement of the boat?

Problem 6 on back

6. Commodore Wilson now finds himself in a dangerous position as the Vorkulii battle cruiser is closing in on him. He is traveling at + 2,000 m/sec. He applies his breaking rockets which will give him an acceleration of -100 m/sec2.

a. After 25 seconds, the Commodore is moving in what direction, + or - ?

b. What is the Commodore’s final velocity?

c. What is the displacement of the spaceship?

d. What is the ship’s displacement when it stops and reverses direction?

e. How much time does it take for the ship to return to its starting point?

1. +10.86 m/sec 12.3 sec

2. + 6.16 x 102 m/sec2 +.3125 m

3. + 6.82 x 106 m 3.38 x 104 m/sec

4. Ha Ha

5. + 7 m/sec +262.5 m

6. a. minus

b. -5.00x 102 m/sec

c. +1.875 x 104 m

d. +2.00 x 104 m

e. 40 sec

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