Calculate the velocity of: A bus travelling through town, with a mass of 5040 kg and kinetic energy of
493,900 J.

V=196

Explanation:

Explanation:

mathematically,

kinetic \: energy \: = \frac{1}{2} m {v}^{2}kineticenergy=

2

1

mv

2

where m= mass

and v=velocity

given that,

kinetic energy=493900J

mass =5040kg

making velocity the subject

v = \sqrt{ \frac{2 \times kinetic \: energy}{mass} }v=

mass

2×kineticenergy

substitute their values in the formula

v = \sqrt{ \frac{2 \times 493900}{5040} }v=

5040

2×493900

v = \sqrt{ \frac{987800}{5040} }v=

5040

987800

v = \sqrt{196}v=

196

v = 14m {s}^{ - 1}v=14ms

−1

Thus the velocity is 14meters per second

d. air pressure decreases as altitude increases.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )