Speed equals Distance over Time. Distance = 35 metres, Time = 5 seconds. 35/5 = 7 metres per second or 7ms-1
90 kmh
2
48 metres per second.
If the ball was dropped from a roof and hit the ground 3.03 seconds later, then when it hit the groundits velocity was 29.694 meters (97.42 feet) per second (rounded) downward.
The acceleration of gravity is 9.8 meters per second2 .In 3 seconds, gravity increases the falling speed by (9.8 x 3) = 29.4 meters per second.This particular ball already had a downward speed of 6 m/s when the 3 seconds began,so at the end of the 3 seconds, its velocity is(6) + (9.8 x 3) = 35.4 meters per second downward
The ball's speed is 9.4 meters per second.
If you divide the meters by the seconds, you get the average speed. But that would be in meters / second, not in meters per second squared, which is a unit of acceleration.
90 kmh
2
48 metres per second.
Answer: 3 seconds
If the ball was dropped from a roof and hit the ground 3.03 seconds later, then when it hit the groundits velocity was 29.694 meters (97.42 feet) per second (rounded) downward.
The acceleration of gravity is 9.8 meters per second2 .In 3 seconds, gravity increases the falling speed by (9.8 x 3) = 29.4 meters per second.This particular ball already had a downward speed of 6 m/s when the 3 seconds began,so at the end of the 3 seconds, its velocity is(6) + (9.8 x 3) = 35.4 meters per second downward
Speed can't be measured in seconds.
speed = distance/time --> time = distance/speed = (30 m)/(50 m/s) = 0.6 seconds
You throw a ball straight up with a velocity of 40 meters per second. What is the ball's velocity after 3 seconds?
To toss a ball straight up so that it takes 4.0 seconds to return to you, it must be thrown at a speed of 19.6 meters per second. This is because it will have a speed of zero at 2.0 seconds, therefore it must have a speed of 19.6 meters per second for gravity's 9.8 meters per second squared to slow it to zero in 2 seconds.