Question

Term displacement. Is it a vector quantity or a scalar quantity?



2.  what is circular motion? Is circular motion an acceleration motion?



3.  derive mathematically the first equation of motion v=u + at?



three mark questions



4.  a boy runs for 20 min. At a uniform speed of 18km/h. At what speed should he run for the next 40 min. So that the average speed comes 24km/hr.



5.  a train accelerated from 10km/hr to 40km/hr in 2 minutes. How much distance does it cover in this period? Assume that the tracks are straight?



6.  a train starts from rest and accelerate uniformly at the rate of 5 m/s2 for 5 sec. Calculate the velocity of train in 5 sec.



7.  a bullet leaves a rifle with a muzzle velocity of 1042 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 1.680 m. Determine the acceleration of the bullet (assume a uniform acceleration)



8.  a bike riding at 22.4 m/s skids to come to a halt in 2.55 s. Conclude the skidding distance of the bike.



9.  a race scoo…

Answer 1

Answer:

1.it is a vector quantity

2.It is a motion around a fixed point.. yes it is accelerating.

3.