Saved Bookmarks
| 1. |
A racing car initially at rest, accelerates at a uniform rate of 5.5 m/s² for 10 s. Calculate (i) the distance covered by the racing car from start, and (ii) the final velocity in km/h. |
Answer» 275 m will be the distance covered by the car198 Km/h will be the FINAL velocityS= Ut + 1/2 a t ² as INITIALLY the car was at rest U = 0 S = 1/2 ** 5.5 * 10 * 10 = 550/2 = 275 m . (ii) final velocity = V= u + at u = 0 V= 5.5 * 10 = 55 m/s = or 198 Km/h |
|