Answer:
First graph
Explanation:
Here we need to tell which graph best represents the relationship between kinetic energy and mass . As we know that ,
KE = 1/2 mv²
Here we will plot KE on y axis and mass of x axis. And it is in form of y = mx + c .On comparing the given equation with ,
y = mx + c
Therefore the line will be straight and will pass through origin with a slope v²/2 .
From the attached graphs , first graph is correct .
<h3>First graph best represents the relationship between kinetic energy and mass.</h3>
milky way is the biggest we have discovered
Answer:
2.465Ns;1.76N
Explanation:
From Newton's Second Law:
There is a conservation of Momentum hence:
Momentum before the impact equals that after the impact.
Hence.
1. The Impulse is same as the change in Momentum which is;
0.145 ×17 =2.465Ns { note: 145g in kg is 0.145}
2. From Newton's third Law; force is the rate of change of impulse expressed mathematically as;
F = m×v / t
Where m×v is impulse and t is time given.
F = 2.465/ 1.4 = 1.76N
Answer:
B. 686N
Explanation:
well do not write this because of I made a big mistake in my calculations