Question

after how many seconds is needed for a thrown ball to reach a 14-m distance if it's distance is given by the relation d=10+40t-5t? (t=time in seconds)

Answer 1

Time, t = 0.1143 seconds.

Explanation:

Given that distance, d = 14m

From the equation;

d = 10 + 40t - 5t

d = 10 + 35t

Substituting the value of distance;

14 = 10 + 35t

35t = 14 - 10

35t = 4

t = 4/35

t = 0.1143 seconds.

The time needed for the ball to reach the 14-m distance is 0.1143 seconds.