Answer:
A.607m/s | B.1.834Mach (speed of sound)
Explanation:
The plane's speed starts out at 145m/s, meaning after we calculate how many m/s it has accelerated, we must add that to the total.
If it accelerates for 20 seconds at a rate of 23.1m/s^2, this means that it accelerates 23.1m/s/s, or in words it gains 23.1 m/s every second. So, to calculate the gain in speed we simply multiply this by the duration of 20 seconds and get 462 m/s. Now, we add this to 145m/s, and get an end velocity of 607m/s.
For the plane's speed in terms of speed of sound, we divide 607m/s by the speed of sound, or 331m/s, and get ~1.834 Mach(speed of sound)
student is removing rocks from a garden. She exerts a force of 218 N on a lever to raise one rock a distance of 11.0 cm.
Answer:
52.98 cm
Explanation:
The ratio of forces and distance moved will be the same hence we apply cross multiplication rule
If 218 N can only raise the rock to a distance of 11 cm then we check the distance it can move when force is increased to 1050 N
218 N=11 cm
1050 N=?
By cross multiplication, the distance will be equivalent to 
Answer:
8
Explanation:
Because you divide 32/4 which gives you 8.
10.00 °C this is the right answer need more question feel free to post
Answer:
Watt
Explanation:
Power is measured in Watts. J/s is the base unit of measurement, but we usually measure power in Watts (W).
