Answer:
16 times that of car A
Explanation:
Moving objects have kinetic energy which is calculated using the formula:
E=(1/2)mv² where m is the mass of the object and v is its velocity.
For car A, kinetic energy =1/2×m×15²
=112.5m........................................i
For car B, the kinetic energy =1/2×m×60²
=1800m......................................ii
dividing ii by i we get
1800m/112.5m= 16.07
Therefore The kinetic energy of car B is 16.07 times that of car A
Answer:
I gonna give you the number so but you need to round 6.19047619048
Explanation:
- This is a speed formula so you would use the formula speed=distance/time
- You need to rearrange it to time=distance/speed
- So you need to divide 13m by 2.1 m/s
Answer:
Air resistance have some significant role in projectile motion if the motion lasts for some time.
Explanation:
- Air resistance or air drag seems to be important in daily actvities and games like baseball.
- The trajectory of the projectile with or without air resistance or air drag is totally different.
- When we neglect air drag, the only acting force is gravity against the motion so the maximum height and range are suppose Hmax and R.
- Now, when we consider air drag, it is important to notice that there are two forces against the motion of the ball and along the direction of gravity. It seems that both maximum height and range are lesser Hmax'< Hmax and R'<R.
Answer:
it means an expert verified the answer so its nearly always true
Explanation:
Answer: It'd be 14.
Explanation:
The formula for this equation would be (57f-32)×5/9 which is equal to 13.889; and rounding that to the whole number would be 14.
