Answer:The mass of ball B is 10 kg.
Explanation;
Mass of ball A =
Velocity of the ball A before collision:
Velocity of ball A after collision=
Mass of ball B=
Velocity of the ball B before collision:
Velocity of ball B after collision=
The mass of ball B is 10 kg.
Answer:
Explanation:
350 cm / 25 cm = 14 radians
14 rad / 2π rad/rev = 2.23 revolutions
Answer:
1248 ft/ sec
Explanation:
Let Q be the position of the observer and let A be the launch point.
Let B = B(t) be the position of the rocket at time t
Also; Let y = y (t)
Let QA be the height of the rocket at time t
We are to find the at a certain time(t) when the distance from Q to the observer is 13000
If we assume an imaginary right-angle triangle QAB ,
Let h be the length of the hypotenuse QB, By using pythagoras Theorem; we have :
h² = 12000² + y²
Differentiating both sides with respect to t ; we have:
----- Equation (1)
where h = 13000
= 480
Replacing it into above equation to find ; we have:
13000 × 480 = 5000 ×
=
= 1248 ft/sec
∴ The rocket is rising fast at the rate of 1248 feet per second.
Archimedes' principle<span> states that the upward </span>buoyant force<span> that is exerted on a body immersed in a </span>fluid<span>, whether fully or partially submerged, is equal to the </span>weight<span> of the fluid that the body </span>displaces<span> and acts in the upward direction at the center of mass of the displaced </span>