Answer:
gravitational pull by earth and friction
Explanation:
When the ball is placed on tilted tale it starts rolling because of the force of gravity pulls it downward along the plane of table and frictional force produces torque which generate rotational motion as a result body will start rolling.
Push of the table will be used to generate frictional force f=μ.N
Answer:
Explanation:
The impulse-momentum theorem states the impulse on an object is equal to the change in momentum of that object. Momentum is given by 
. Since mass is constant, the train's change in momentum is:
(two significant figures).
Impulse is also given as 
, where 
is the average force applied and 
is change in time. Since 
is given as 
, we have the following equation:
(two significant figures).
Answer:
11 or 10 meters a second
Explanation:
pretty sure thats my explanation "pretty sure" like my confidence? mark me brainliest bad at spelling lol
Answer:
13.18 m/s
Explanation:
Let the velocity of sports utility car is
-u as it is moving in opposite direction.
mc = 1200 kg, uc = 31.1 m/s
ms = 2830 kg, us = - u = ?
Using conservation of momentum
mc × uc + ms × us = 0
1200 × 31.1 - 2830 × u = 0
u = 13.18 m/s
Answer:
170 N
Explanation:
F=pressure(pa) ÷ area(m^2)
=100.000 ÷ 0,0017
=<em><u>170</u></em><em><u> </u></em><em><u>N</u></em>
