Physics Question (1 Viewer)

[Shoom]

Hi
A truck is travelling at a speed 20ms East a car is travelling at a speed of 30ms an observer in the truck reckons the speed of the car is more then 30ms, Explain why this is with reference to velocity of the car relative to speed of the truck.

 

[chltmddus112]

isn't this the questions from the Prelim test..?

I did it with Pythagoras's Theory if it is the question from Prelim

 

[Shoom]

I SHOULD HAVE KNOWN, IT WAS SO OBVIOUS YET STUPID SHOOM DECIDES NOT TO ANSWER IT CORRECTLY.

DAMN IT DAMN IT DAMN IT.

OH GOD ITS JUST SQRT of 20^2 + 30^2 NNNNNNOOOOOOOOOOO

Crys.

 

[Aplus]

Hi
A truck is travelling at a speed 20ms East a car is travelling at a speed of 30ms an observer in the truck reckons the speed of the car is more then 30ms, Explain why this is with reference to velocity of the car relative to speed of the truck.

To find the velocity of the car relative to the truck its:
V_Car->Truck
= V_Car - V_Truck
Vector subtraction here, and the answer should be >36