science...........
A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
7.2 s
A Boeing 747 aircraft has a landing speed of 72 m/s, and upon landing it is able to come to a stop in 2,000 m. Assuming constant deceleration, how long would it take for a Boeing 747 to come to a full stop? Please choose from one of the following options.
56 s
A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car.
8.10 m/s
The observation deck of tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the deck to the street below.
8.69 s
. Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?
10 kmph
A train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kms away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is:
120 kmph
To reach the orbital altitude of Earth, a space shuttle must accelerate from zero to 8,000 meters per second (~18,000 miles per hour) in eight and a half minutes. What would the minimum average acceleration of the shuttle have to be in order to achieve this?
15 m/s²
A stone is dropped into a deep well and is heard to hit the water 3.41 s after being dropped. Determine the depth of the well.
57.0 meters deep
Aroldis Chapman holds the world record for fastest baseball pitch at 105.1 mph (169 km/h). The distance from the pitcher's mound to home plate is approximately 60 feet (~18 meters). Assuming constant velocity, how much time would a batter have to react to Chapman's world record pitch? Please choose from one of the following options.
o.4 s
A Ferrari Enzo is able to reach a speed of 134 miles per hour (60 meter/sec) from 0mph in 11 seconds. Assuming constant acceleration, how far would the Enzo travel in this amount of time? Please choose from one of the following options.
330 m
In 1997, the Thrust SSC, a turbofan powered vehicle, achieved the land speed world record of 760.34 mph (1,223.65 km/h) and became the first car to break the sound barrier. If it took 1 minute for the Thrust SSC to reach its top speed, what was the average acceleration during that time? Please choose from one of the following options.
5.67 m/s²
Top fuel dragster cars can accelerate from rest down a quarter mile track (400 meters) in under 4 seconds. Assuming constant acceleration, what would the acceleration of a dragster be if it sped down a track in exactly 4 seconds?.
50 m/s²
An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance in 1hours, it must travel at a speed of:
720 kmph
A bike accelerates uniformly from rest to a speed of 7.10 m/s over a distance of 35.4 m. Determine the acceleration of the bike.
0.712 m/s
An ambulance is currently traveling at 15m/s, and is accelerating with a constant acceleration of 5 m/s^2 2 start superscript, 2, end superscript . The ambulance is attempting to pass a car which is moving at a constant velocity of 30m/s. How far must the ambulance travel until it matches the car's velocity? Please choose from one of the following options.
67.5 m