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borishaifa [10]
3 years ago
6

A 50 kg ball traveling at 20 m/s would have

Mathematics
2 answers:
kolbaska11 [484]3 years ago
8 0

A : 10000 J

B: 625 J

C: 2500 J

Step-by-step explanation:

Step 1:

We know that ,

Kinetic Energy is given by ((1/2) × m × V²) J

where m = Mass of substance

            V = Velocity

Step 2:

In first case, m= 50 kg, V=20 m/s

Kinetic energy = 0.5 × 50 × 20 ×20

                         =  10000 J

In second case, m= 50 kg, V=20 m/s

Kinetic energy = 0.5 × 50 × 5 ×5

                         =  625 J

In Third case, m= 50 kg, V=10 m/s

Kinetic energy = 0.5 × 50 × 10 ×10

                         =  2500 J

kati45 [8]3 years ago
5 0

Answer:

1)4 times more

2) 4 times less

3)The same

Step-by-step explanation:

I just know cause I'm smart plus I forget what I did in my head

The person below me is wrong by the way unless they want the actual answer to the problem

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4 years ago
Dots sells t-shirts ($2) and shorts ($4). In April total sales were $456. People bought 4 times as many t-shirts as shorts. How
Doss [256]

Answer:

Dots sold 152 t-shirts and 38 shorts sold.

Step-by-step explanation:

Let t = t-shirts and s = shorts.

We know that people bought 4 times as many t-shorts as shorts, which can be set to the equation t = 4s

Since t-shirts cost $2, shorts cost $4, and the total sales was $456, we can set the equation 2t +4s = 456

So our two equations are:

t = 4s

2t + 4s = 456

Substitute t from the 1st equation into the 2nd:

2(4s) + 4s = 456

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12s = 456

s = 38

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Since we have the number of shorts, we can plug that back into the 1st equation to find the number of t-shirts sold:

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There were 152 t-shirts sold.

4 0
4 years ago
PLEASE HELP! ITS DUE SOON!!!! I DONT GET THIS!!
o-na [289]

Answer:

d. 50°

Step-by-step explanation:

Since you know one angle and its opposite side, use the law of sines.

sin 36°/11.9 = sin D/15.6

sin D = 15.6 × sin 36° / 11.9

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D = sin^-1 0.7705

D = 50.4°

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Who listens to NF and enjoys his music?
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Answer:

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