<span>Recall formula for Kinetic energy is:
KE = 1/2mv^2, where KE = 275J
and momentum (which is 25.0 kg m/s) = m*v
Therefore substitute for KE and mv in the equation above to get speed
=> 275 = 0.5 * 25 * v
v = 275/12.5
v = 22m/s
to get mass m, recall momentum = m*v
=> 25= 22*m
m= 25/22 = 1.3663kg</span>
Answer:
1.846....hours
Explanation:
since if we divide 12 km or just 12 by 6.5 we will get this number meaning that this is how long it would take someone
The universe is 13.8 billion years old.
Answer:
90 meters
Explanation:
Given:
x₀ = 0 m
v₀ = 0 m/s
v = 30 m/s
t = 6 s
Find:
x
x = x₀ + ½ (v + v₀)t
x = 0 + ½ (30 + 0)(6)
x = 90
The car travels 90 meters.
is the persons moment of inertia about an axis through her center of mass.
Answer: Option B
<u>Explanation:</u>
Given data are as follows:
moment of inertia of the empty turntable = 1.5
Torque = 2.5 N/m
, and
Let the persons moment of inertia about an axis through her center of mass= I
So, Now, from the formula of torque,
So, from the above equation, we can measure the person’s moment of Inertia (I)