Question

Radhika take 20min to reach her school on a bicycle . If she rides with a speed of 4m/s calculate his speed in km/hr

Answer 1

Answer:

D=4800 m=4.8 km , S=4 m/s=72/5 km/hr

Explanation:

20 min=(20×60)sec=1200 sec

speed=4m/s

distance travelled =speed taken×time taken

D=ST

D=4×1200

D=4800 m

speed travelled in km/hr=speed travelled in m/s×18/5

S=4×18/5

S=72/5 km/hr