bullet of mass 10 g has a muzzle velocity of 300 m/s. Find (a) the momentum of the bullet (b) the recoil velocity of the gun if its mass is 2.0 kg. 3. A 70 kg man dives away from a stationary canoe with a velocity of 3.0 m/s parallel to the water. If the canoe has a mass of 150 kg‚ find its recoil velocity. 4. A steel sphere of mass 0.10 kg is fired horizontally with a velocity of 30 m/s into a block of plasticine of mass 1.0 kg at rest. With what velocity does the combination move away?
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related basic laws. The same considerations will help you understand the motions of Earth satellites‚ of which there is one natural one and many artificial ones. Angular Measure Motion is described as a time rate of change of position. Angular velocity involves a time rate of change of position‚ which is expressed by an angle. It is important to be able to relate the angular description of circular motion to the orbital or tangential description‚ that is‚ to relate the angular displacement to
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does the slope of velocity – time graph give? (a) Distance (c) Acceleration (b) displacement (d) Change in velocity. [1] 2. The displacement of the body can be(a) Positive (c) Zero (b) negative (d) All of these. [1] 3. Which of the following gives both direction and magnitude(a) scalar (c) Both (b) vector (d) None. [1] 4. If a moving body comes to rest‚ then its acceleration is(a) Positive (c) Zero (b) negative (d) All of these depending upon initial velocity. [1] 5.
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to give you wide understanding on the different concepts regarding Constant and Uniformly Accelerated Motion. Upon finishing the SIM‚ the reader is expected to: • identify the motion of an object in terms of distance or displacement‚ speed or velocity‚ and acceleration UNDESPICABLE MECHANICS CHANICS GUIDE CARD ACTIVITY CARD ENRICHMENT CARD ASSESSMENT CARD REFERENCE CARD UNDESPICABLE MECHANICS GUIDE CARD The Guide card presents the big picture‚ I’ll give you the overview
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Have you ever ridden on a rollercoaster and felt your heart drop as you were going downhill? Have you asked yourself how getting these feelings were possible? The answer is math. You may ask what math has to do with rollercoasters. Math is the reason for everything and anything that has to do with rollercoasters. Without math‚ it would be impossible to even be able to create one. To build a rollercoaster you need to be able to use numbers when talking about the costs‚ taking measurements‚ calculating
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just need to find the time. We find the time‚ by applying the average velocity formula to both parts of the journey‚ and solving for time. Δt1 = Δx1/ Vavg ‚ 1 = 30/60 = 0.5 hours Δt2 = Δx2/ Vavg ‚ 2 = 30/30 = 1.0 hours Vavg = Δx/Δt = (30 + 30) / (0.5 + 1.0) Vavg = 40 mi/hr Questions 2 – 4 relate to two particles that start at x = 0 at t = 0 and move in one dimension independently of one another. Graphs‚ of the velocity of each particle versus time are shown below Particle A Particle B
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Write ib unit. velocity’ bi I)t"* velocity-time graPh‚ when an obiect has (i) unifortdy accelerated (ii) uniformly retarded velocity. fror" that if u Uoayi" thrown ve*ically upwatd‚ the time of ascent is equal to the time ffi of descent. Th;;r*h .ttracts the moon. Does the moon also attract the earth ? If it does‚ why does ttre earth not move towards the moon ? 6) A bullet of mass 1‚0 g is fired with a velocity of 400 m/s from a gun of mass 4 kg’ What is ‚‚xldge recoil velocity of the gun
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line along a road. It’s distance x from a stop sign is given as a function of time t by the equation‚ where and. Calculate the velocity of the car for each of the time given: (a) t = 2.00s; (b) t = 4.00s; (c) What will be the time when the acceleration is equal to zero? Solution: By getting the derivative of the distance as a function of time we can get the velocity as a function of time. Substitute the values of α and β a) Given t = 2.00s b)
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Equations of Motion Worksheet 1. A car moving at a velocity of 25 m/s‚ accelerates at a rate of 6 m/s2. Find its velocity after 3s. 2. An object is dropped from rest. Calculate its velocity after 2.5s if it is dropped: a. On Earth‚ where the acceleration due to gravity is 9.8m/s2. b. On Mars‚ where the acceleration due to gravity is 3.8m/s2. 3. A motorbike is travelling with a velocity of 3m/s. It accelerates at a rate of 9.3m/s for 1.8s. Calculate the distance it travels in this time. 4. A Tesla
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a rotating turntable. The different vectors representing velocity for the travelling marble are shown below. Notice that the size of the vector remains the same but the direction is constantly changing. Because the direction is changing‚ there is a ∆v and ∆v = vf - vi ‚ and since velocity is changing‚ circular motion must also be accelerated motion. vi ∆v vf -vi vf2 If the ∆t in-between initial velocity and final velocity is small‚ the direction of ∆v is nearly radial (i.e. directed
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