Question

7. If a ball moves at 135 m/s, it will strike an object in 4 seconds. If it moves at 120 m/s, how long will it
take to strike the same object?​

Answer 1

Case 1:

$v = 135 \: m/s \\ t = 4 \: s$

We know that,

Distance = Speed × Time

=> 135 × 4

=> 540 m

Case 2:

Since we are asked for the time taken to strike the same object but with different velocity. Therefore, Distance will be same.

Again,

Distance = Speed × Time

=> 540 = 120 × t

=> t = 540/120

=> t = 4.5 s

Answer: 4.5 seconds

Answer 2

Answer:

see the answer is correct ok