Physic Fis

FOUNDATION IN SCIENCES

COURSE CODE : FP1010

COURSE TITLE : PHYSICS 1

DATE / DAY : 5 JANUARY 2007 / FRIDAY

TIME : 9.oo am-12.oo pm

DURATION : 3 Hours

INSTRUCTIONS TO CANDIDATES

1. Do not open this Question Booklet until you are told to do so.

2. This question booklet consists of THREE (3) SECTIONS, namely Section A, Section B and C.

3. Answer ALL questions from Section A and Section B, and any THREE questions from Section C in the question paper.

4. Please read the instructions carefully before you attempt any question.

5. Candidates are reminded that they should have no books, notes, paper, or other materials in their possession during the examination unless their use has been specifically permitted.

(This question paper consists of 13 printed pages inclusive of this page)

PART A

Answer all questions. Each question carries 3 marks.

1. An 88 g arrow is fired from a bow whose string exerts an average force of 110 N on the arrow over a distance of 78 cm. What is the speed of the arrow as it leaves the bow?

2. What work is required to stretch a spring of spring constant 15 N/m from x = 3.0 cm to x = 7.0 cm?

3. During a soccer game a ball of mass 0.425 kg, which is initially at rest, is kicked by one of the players. The ball moves off at a speed of 26 m/s. Given that the impact lasted for 8.0 ms, what was the average force exerted on the ball?

4. An empty 15,000 kg coal car is coasting on a level track at 5.00 m/s. Suddenly 5000 kg of coal is dumped into it from directly above it. The coal initially has zero horizontal velocity with respect to the ground. Find the final speed of the car.

5. A flywheel turns at 480 rpm. Compute

(i) the angular speed at any point on the wheel, and

(ii) the tangential speed 30.0 cm from the center of the wheel.

6. The angular speed of a disk decreases uniformly from 12.00 rad/s to 4.00 rad/s in 16.0 s. Compute

(i) the angular acceleration, and...