1. Answer the following questions: (1+2+1) (a) State what is meant by a vector quantity and give one example.
(b) Fig. 1.1 shows a toy locomotive on a circular track of radius 0.60 m

At time t = 0, the locomotive is at point A. The locomotive travels at a constant speed round the track.
It takes 20 s to travel completely round the track.
(i) Calculate the speed of the locomotive.
(ii) Fig. below shows the variation of the magnitude of the displacement s of the locomotive from A with
time t

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.