PHYSICS 1 Dimensional Kinematics Problems

NAME_____________________

1. A certain automobile manufacturer claims that its super-deluxe sports car will accelerate uniformly from rest to a speed of 87 (mi/h )in 8.0 s.

a. Determine the acceleration of the car in ft/s² and mph/s.

b. Find the distance the car travels in the first 8 s, (in feet).

c. What is the velocity of the car 10 s after it begins its motion,
assuming it continues to accelerate at the rate of 16 ft/s²?

2. Flossy Fletcher was curling her hair when she dropped the curling iron.
The curling iron fell 1.651m to the floor.

a. How fast was the iron traveling when it hit the floor?

b. How long was it in the air?

3. An electron in a cathode ray tube of a TV set enters a region where it accelerates uniformly from a
speed of (3 X 10⁴) m/s to a speed of (5 X 10⁶) m/s in a distance of 2 cm.

b. How long is this electron in this region where it accelerates?

c. What is the acceleration of the electron in this region?

4. A long distance runner runs 3.1 miles in 18 minutes.

What is her average velocity in mi/hr?

5. An F-15 jet fighter starts from rest and reaches a speed of 330 m/s in 2 seconds.

a. What is the planes acceleration?

b. How much distance did the jet cover in the 2 seconds?

c. How fast was the jet traveling after 1 second?

6. To calculate the depth of a well a physics student drops a rock into the well. 4.5 seconds after the
rock is dropped the student sees it hit the bottom. The rock accelerates downwards at 9.80 m/s2.

a. How deep is the well?

b. How fast is the rock traveling the instant before it hits the bottom?

7. A bicyclist travels from 15.6 m/s to 21.1 m/s in 30 meters distance.

a. What is the acceleration of the bicyclist?

b. How much time does it take the bicyclist to travel the 30 meters?

8. While looking out of a window in a building Hillary Clinton notices a republican falling past her
window at 15 m/s. The republican falls with an acceleration of 9.80 m/s².

a. How fast is the republican traveling after falling 30 m?

b. How long does it take to travel 30 meters down?

c. The republican safely lands in some bushes an additional 15 meters farther down from the 30m.

* What was his speed the instant before he hit the bushes?

* How long did it take to travel the total 45 meters down?

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