1). A farmer has to go to 500 m due north, 400 m due east and 200 m due south to reach his field. If he takes 20 minutes to reach the field:
(a) Find distance
(b) Find displacement
(c) Find average speed
(d) Find average velocity
2). The length of a seconds hand in watch is 1 cm. Find the change in the velocity of its tip in 15 seconds.
3). A particle moving along a straight line travels half of a distance with uniform speed 30 m/s and the remaining half of the distance with speed 60 m/s. Find the average speed of the particle.
4). A car moves with 60 km/hr in the first 1 hour and with 80 km/hr in the next half and hour. Find:
(a). total distance travelled by the car.
(b). average speed of the car in total 1.5 hours
5). A block moves in a straight line with velocity v for time t. Then its velocity become 2v for next time interval t. Finally its velocity becomes 3v for time T. If average velocity during the complete journey was 2.5v, then find T in terms of t.
(a) Find distance
(b) Find displacement
(c) Find average speed
(d) Find average velocity
2). The length of a seconds hand in watch is 1 cm. Find the change in the velocity of its tip in 15 seconds.
3). A particle moving along a straight line travels half of a distance with uniform speed 30 m/s and the remaining half of the distance with speed 60 m/s. Find the average speed of the particle.
4). A car moves with 60 km/hr in the first 1 hour and with 80 km/hr in the next half and hour. Find:
(a). total distance travelled by the car.
(b). average speed of the car in total 1.5 hours
5). A block moves in a straight line with velocity v for time t. Then its velocity become 2v for next time interval t. Finally its velocity becomes 3v for time T. If average velocity during the complete journey was 2.5v, then find T in terms of t.
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