Question

PLS HELP I GIVE BRAINLIEST
A car is travelling at 70 mph and a lorry is travelling at 50mph
calculate the speed of the car relative to the lorry
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Answer 1

Answer:

Step-by-step explanation:

relative speed is calculated by the difference of the one with respect to the other

let car be 70 mph

and lorry  be 50 mph../

relative speed of car with respect to lorry = 70-50 = 20 mph

this is ur answer

Answer 2

The speed of the car relative to the lorry when a car and a lorry travelling-

in the same direction : 20 mph

in the opposite direction: 120 mph

What is relative speed?

"Relative speed is the speed of one body with respect to another."

Formula for relative speed: -

If two bodies moving with speed m, n (m > n)

in the same direction, then the relative speed = m - n

in the opposite direction, then the relative speed = m + n

Given: - a car is travelling at 70 mph and a lorry is travelling at 50 mph.

If car and a lorry travelling in the same direction then the relative speed would be,

= 70 - 50

= 20 mph

If the car and a lorry travelling in the opposite direction then the relative speed would be,

= 70 + 50

= 120 mph

Therefore, the speed of the car relative to the lorry is 20 mph if they are travelling in the same direction and 120 mph if the car and a lorry travel in opposite direction.

Learn more about relative speed here:

https://brainly.com/question/24692222

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