Impulse | A-level Physics | OCR, AQA, Edexcel

[@Annie-cs7tk]

Shouldn’t 0.3 seconds be 0.2 seconds like in the original question? 13:30

[@andrea-xk9gw]

Also the mass of the ball is 0.04kg not 0.4kg

[@haiiizzzy1701]

what the hell i got 50 meters per second

[@safwataldajani7115]

yup me too, its because they made the mistake of writing the mass of the ball as 0.4kg instead of 0.04 like the question and the time as 0.3 seconds instead of 0.2 seconds, your answer is right!

[@termosifone4310]

God bless you❤️❤️

[@purist3612]

i got 75meters per second

[@harv6036]

You got it right, she used 0.4kg instead of the original 0.04kg, I think the 0.04kg was a typo

[@masamune4029]

@@harv6036 it's 50 m/s, because she used 0.4 kg instead of 0.04 kg and also 0.3 s instead of 0.2 s. so (10*0.2)/0.04 = 50 m/s

[@harv6036]

@@masamune4029 with the calculations purist used though they got the correct answer