Answer:
33333.35 kg
Explanation:
I got it right on Acellus, rounded to 33300 sigfigs
Answer:
Smaller
Explanation:
Net force = Total mass * acceleration
If there is no friction, the net force is the tension in the second rope. Let’s assume the mass of each block is 2 kg, and the tension in the second rope is 8 N.
8 = 4 * a
a = 2 m/s^2
Since there is friction, the tension in the first rope is causing the first block to accelerate. To determine tension, use the following equation.
F = m * a
T = 2 * 2 = 4 N
If there is no friction and both blocks have the same mass, the tension in the second rope will be less than the tension in the first rope. I hope this helps you. If the masses are different, you can use this method to determine the tension in the first rope.
Newton taught us that Force = (mass) x (acceleration)
Force = (0.2) x (20) = <em>4 newtons</em> .
Something to think about: The ball can only accelerate while the club-face
is in contact with it. Once the ball leaves the club, it can't accelerate any more,
because the force against it is gone.
Answer:
(a) the deceleration of the player is -80.36 m/s²
(b) the time the collision last is 0.093 s
Explanation:
Given;
Initial velocity of the football player, u = 7.50 m/s
Final velocity of the football player, v = 0
distance traveled = compression of the pad, s = 0.35 m
Part (a) the deceleration of the player
v² = u² + 2as
0 = 7.5² + (2 x 0.35)a
0 = 56.25 + 0.7a
- 56.25 = 0.7a
a = -56.25 / 0.7
a = -80.36 m/s²
Part (b) the time the collision last
v = u + at
t = (v - u)/a
t = (0 - 7.5)/ -80.36
t = - 7.5 / -80.36
t = 0.093 s
Answer:
c. -14,000
Explanation:
Workdone by gas is the product of the pressure and the volume where there is a change of volume.
If v1 is the initial volume of the gas and v2 is the final volume of gas, the work done
= p(v2 - v1)
where p is the pressure
and p = 70,000 Pa
Given that volume decrease by 0.2m^3, v2 - v1 = -0.2
Workdone = 70000 ( -0.2)
Workdone = -14,000 J
Option c. -14,000