A car is moving at 20 m/s when it begins to increase speed. Every 10 s

1.	A car is moving at 20 m/s when it begins to increase speed. Every 10 s it gains 5 m/s until it reaches its maximum speed of 50 m/s which it retains.(i) When does the car reach its maximum speed of 50 m/s? (ii) Find the distance travelled by the car after 150 s. (iii) Write down expressions for the speed of the car t seconds after it begins to speed up i.e. from t = 0 s to t = 60 s.
Answer» ANSWER: I,when it GAINS 5m/s II,the DISTANCE is 172m/s hii,0÷60=60s

A car is moving at 20 m/s when it begins to increase speed. Every 10 s it gains 5 m/s until it reaches its maximum speed of 50 m/s which it retains.(i) When does the car reach its maximum speed of 50 m/s? (ii) Find the distance travelled by the car after 150 s. (iii) Write down expressions for the speed of the car t seconds after it begins to speed up i.e. from t = 0 s to t = 60 s.

Answer»

I,when it GAINS 5m/s

II,the DISTANCE is 172m/s

hii,0÷60=60s