A negatively charged rod is held close to an uncharged metal ball on an insulating stand. The ball will

• A. be negatively charged
• B. be positively charged
• C. have an excess negatively charges on the side nearest the rod
• D. have an excess positively charges on the side nearest the rod

A stone projected horizontally from the top of a tower with a speed of 4 ms\(^{-1}\) lands on the level ground at a horizontal distance 25 m from the foot of the tower. Calculate the height of the tower. g = 10 ms\(^{-2}\)]

The diagram below shows a velocity - time graph. The statement that is true about this motion is that the car

• A) has no acceleration between point F and G
• B) decelerates between F and H
• C) has a constant soeed between points E and F
• D) Accelerates between points F and G

(a) Give two examples each of:

(i) rotational motion;

(ii) linear motion.

(b) Describe a laboratory experiment to determine the density of an irregularly shaped solid.

(c) State Newton's second law of motion

(d) Explain the term inertia.

(e)

The diagram below illustrates a body of mass 5.0 kg being pulled by a horizontal force F. If the body accelerates at 2.0 ms\(^{-2}\) and experiences a frictional force of 5 N, calculate the:

(i) net force on it;

(ii) magnitude of F;

(iii) coefficient of kinetic friction. [ g = 10 ms\(^{-2}\)]

Find the tension T1 in the diagram below if the system is in equilibrium

[G = 10ms^-2]

• A. 200/√3N
• B. 100/√3N
• C. 300/√3N
• D. 100N

The dimensions of momentum are

• A. MLT
• B. ML^-1T^-1
• C. MLT^-1
• D. ML^-1T

In an ideal wheel an axle system, R stand for the radius of the wheel and r is the radius of the axle. the mechanical advantage is

• A. (R/r)²
• B. r/R
• C. (r/R)²
• D. R/r

Which of the following electromagnetic wave can be detected by its heating effect?

• A. ultraviolet radiation
• B. x-rays
• C. gamma rays
• D. infrared radiation

A projectile is fired from the ground level with a velocity of 300ms^-1 at an angle of a 30^o to the horizontal. Calculate the time taken to reach the maximum height? [g = 10ms^-2]

• A. 30s
• B. 20s
• C. 25s
• D. 15s

Which type of motion do the wheels of a moving car undergo?

• A. Vibratory and translational motion
• B. Random and translational motion
• C. Rotational mand oscillatory motion
• D. Translational and rotational motion