A rocket is travelling at a speed of 21,000 miles per hour (mph). Use the fact that 1 km is approximately equal to 0.6214 miles to convert this speed to kilometers per hour (km/h). Round your answer to the nearest whole number. Do not type the units in the space below.

Ava was traveling in her car at 68 miles per hour (miles/h). Use the fact that 1 km is approximately equal to 0.6214 miles to convert this speed to kilometers per hour (km/h). Round your answer to the nearest tenth. Do not type the units in the space below.

At 40km/h, how many seconds does it take to travel 1km.

A satellite orbits earth at a speed of 22100 feet per second (ft/s).  Use the following facts to convert this speed to miles per hour (mph).1 mile = 5280 ft1 min = 60 sec1 hour = 60 minRound your answer to the nearest whole number. Be sure not to round until you have completed all the calculations.Do not type the units in the space below.

A car is traveling at a speed of 80 miles per hour. What is the car's speed in kilometers per hour? How many kilometers will the car travel in 2 hours? In your computations, assume that 1 mile is equal to 1.6 kilometers. Do not round your answers.Speed: kmhDistance traveled in 2 hours: km

Select the correct answer.In stage 2 of a rocket's takeoff, the speed of the rocket increases at a rate of 4.3% per minute. The speed of the rocket at the beginning of stage 2 was 5,000 kilometers per hour. Its speed at the end of Stage 2 will be 25,000 kilometers per hour.If t is the time, in minutes, from the beginning of stage 2, which equation could be used to determine how long it will take for the speed of the rocket to reach 25,000 kilometers per hour, assuming it increases at the same rate for all of stage 2? A. 25,000=5,000⁢(1.043)𝑡 B. 5,000=25,000⁢(0.043)𝑡 C. 25,000=5,000⁢(1.43)𝑡 D. 5,000=25,000⁢(0.957)𝑡