A basketball court is 35m long and a toy car is placed at one end. Starting from rest, it takes 8.45 seconds to cross the other side. Calculate the average velocity of the car.
3 answers
A navy plane can land on a ship while going 245km/hr. Calculate the acceleration of the plane if it can go from 235km/hr to rest in 425m.
A space probe needs to accelerate from 34m/s to 65m/s in 1500m. Hom much time will it take to achieve this.
average speed = distance/time
v initial = 245 km/ hr * 1 hr / 3600 s * 1000 m/km =68 m/s
vfinal = 0
(If you mean 235, use that)
acceleration = change in velocity / time = (0-68) / time
time = distance / average speed = 435 / (.5*68)
34m/s to 65m/s in 1500m
average speed = (34 + 65)/2 = 49.5m/s
distance = speed * time
1500 = 49.5 * t
v initial = 245 km/ hr * 1 hr / 3600 s * 1000 m/km =68 m/s
vfinal = 0
(If you mean 235, use that)
acceleration = change in velocity / time = (0-68) / time
time = distance / average speed = 435 / (.5*68)
34m/s to 65m/s in 1500m
average speed = (34 + 65)/2 = 49.5m/s
distance = speed * time
1500 = 49.5 * t