Question

a ball is projected at 45 degrees and its range is 10m velocity of projection is
a - 7√3
b- 15
c - 9.6
d - 7√2​

Answer 1

Answer:NOW WE ALL KNOW THAT THERE IS NO ACCELERATION ACTING IN THE HORIZONTAL DIRECTION.

NOW WE KNOW THAT RANGE IS EQUAL IS VELOCITY IN X DIRECTION*TOF.

NOW VELOCITY IN X IS UCOS45. CONSIDER T AS TOF.

NOW CALCULATE TOF. IT WILL BE = 2USIN45/g.

NOW WE KNOW TOF AND VELOCITY MULTIPLY THEM EQUATE TO 10[AS GIVEN] . CONSIDERING G AS 10 WE WILL GET THE ANSWER AS 10M/S

ENJOY LEARNING

Explanation: