A stone is projected vertically upwards with speed 17.5m/s. The length of time for which it is at least 6.6m above its starting position is D/7 seconds. What is the value of D?
SupportExpert
A stone is projected vertically upwards with speed 17.5m/s. The length of time for which it is at least 6.6m above its starting position is D/7 seconds. What is the value of D?
Share