V₀ = 5,0 m/s
V = 7,5 m/s
t = 1,25 s
_________
a = (V-V₀) / t = (7,5 - 5,0 ) / 1,25 = 2,50 / 1,25 = 2 m/s²
Answer: acceleration a=2 m/s²
Answer: 12.0 m/s^2
Explanation:
Let be the angular acceleration of the end of the rod
Taking torque about the link, we have:
Torque is also given in terms of moment of inertia of the rod and its angular acceleration i.e.
From equations (i) and (ii) we have:
The acceleration of the end of the rod farthest from the link is given by:
Answer:
<em>A. 22 </em>
<em>B. NO</em>
Explanation:
<u>A.</u>
During a collision , <em>the net external force on the system is zero .</em>
hence , the total momentum of the system can be CONSERVED .
let the mass of frosty and snowflake be m ;
- initial velocity of frosty be = 25
- final velocity of frosty be = 13
- initial velocity of snowflake be = 10
- final velocity of snowflake be = x
therefore from principle of conservation of momentum ,
<em></em>
so ,
<u>answer for A. 22 </u>
<u>B</u>.
<em>The collision is NOT ELASTIC.</em>
this is because if it had been elastic , the coefficient of restitution should have been 1 but it isnot i.e
≠ 1
<em>thus it's an inelastic collision.</em>
A.) Metal is used for the burner below the pot to slow the transfer of thermal energy because its electrons move freely.
Soccer ball because it’s material is heaver but it can also be a basketball because most balls are wide