We know, Impulse of a body is change in momentum.
Also, the final velocity of wood block is 0 m/s.
So, Impulse = Final Momentum - Initial Momentum
Impulse = 0 - ( 0.05 kg × 350 m/s )
Impulse = - 17.5 kg m/s
Therefore, the impulse exerted by the wood on the bullet is -17.5 kg m/s .
Answer:
The direction of the car’s change in linear momentum is 149.04° West of North
Explanation:
Momentum is defined as the product of mass of a body and its velocity
Momentum = mass × velocity
Change in Momentum = mass × change in velocity
∆P = m∆v
∆P = m(v-u)
Given m = 1500kg
v = 25m/s
u = 15m/s
∆P = 1500(25-15)
∆P = 1500×10
∆P = 15,000kgm/s
Since the car first travels due East i.e +x direction
x = 25m/s
Travelling due south is negative y direction
y = -15m/s
Direction of the car change
θ = tan^-1(y/x)
θ = tan^-1(-15/25)
θ = tan^-1(-0.6)
θ = -30.96°
Since tan is negative in the second quadrant
θ = 180-30.96
θ = 149.04°
The direction of the car’s change in linear momentum is 149.04° West of North
Answer:
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Explanation:
thats your answer
This question involves the concepts of average kinetic energy and velocity.
Complete question: Calculate the root mean square velocity of the nitrogen molecules, at 25°C, in meters per second (m/s). Do not include the unit of measure in your answer.
The root mean square velocity of the nitrogen molecule at 25°C is "727.66 m/s".
The average kinetic energy of gas molecules is given by the following formula:
Also,
Comparing both equations we get:
where,
v = root men square velocity = ?
K = Boltzman's constant = 1.38 x 10⁻²³ J/k
T = absolute temperature = 25°C + 273 = 298 k
m = mass of nitrogen molecule = 2.33 x 10⁻²⁶ kg
Therefore,
<u>v = 727.66 m/s</u>
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Learn more about the root mean square velocity here:
brainly.com/question/2020688?referrer=searchResults
