The Student Room Group

Isaac physics A-Level

Hello! Please can someone explain or give the answer to part B on the question, https://isaacphysics.org/questions/overtaking - I have worked out the answer to part A as 31.1s. Thanks
Reply 1
you're multiplying the time spent on the wrong side of the road by the speed with which the cars are getting closer to each other.

NB isaac is calling answers rounded to 3 sig figs incorrect, so try rounding to fewer
Reply 2
Original post by Joinedup
you're multiplying the time spent on the wrong side of the road by the speed with which the cars are getting closer to each other.

NB isaac is calling answers rounded to 3 sig figs incorrect, so try rounding to fewer

Sorry, can you explain what numbers I'd need to use? I'm a bit confused
Reply 3
Speed of car 26.8m/s
Speed of a car going in the opposite direction 26.8m/s
The cars are getting closer to each other at the rate of 26.8x2 m/s ...53.6 m/s
The car spends 31s on the wrong side of the road
So whats the minimum distance to the oncoming car at the start of the 31s that ensures the cars do not crash?
Reply 4
Original post by Joinedup
Speed of car 26.8m/s
Speed of a car going in the opposite direction 26.8m/s
The cars are getting closer to each other at the rate of 26.8x2 m/s ...53.6 m/s
The car spends 31s on the wrong side of the road
So whats the minimum distance to the oncoming car at the start of the 31s that ensures the cars do not crash?

Thank you so much!! Wording of the question in isaac threw me off bit haha

Quick Reply

Latest