Answer:
The mass of the bullet is much greater than the mass of the rifle.
Explanation:
-Emily has a mass greater than the mass of the rifle.
-By Newton's 3rd Law, the gun only moves back in proportion to it's mass.
-This greater mass acts as a shock absorber to the resulting recoil force.
-Due to Emily's greater mass, she'll only experience a force equal to the mass of the bullet which is not enough to make her have the same acceleration as the bullet.
Answer:
∆E = 4.16J
Change in internal energy of the tie and spike is 4.16J
Explanation:
Given;
Mass of spike m = 0.77kg
Initial Speed of spike v = 3.5m/s
Efficiency = 88.3%
Kinetic energy of spike can be calculated as;
K.E = 1/2 × mv^2
Substituting the values;
K.E = 1/2 × 0.77 × 3.5^2
K.E = 4.71625J
Change in internal energy of the tie and spike;
∆E = 88.3% of K.E
∆E = 0.883 × 4.71625J
∆E = 4.16J
Change in internal energy of the tie and spike is 4.16J
1: B
2: C <span>Sediments were deposited in continuous sheets that spanned the body of water that they were deposited in</span>
3: A Erosion is the action and movement of a surface process
The answer is A
Hope that helps!