Question

In: Physics

A rocket shot up reaches a height of 90.0m where an explosion causes the rocket to...

A rocket shot up reaches a height of 90.0m where an explosion causes the rocket to split into two parts that weigh 2.8kg and 0.56kg respectively. 870J of chemical energy was transformed into kinetic energy of the two parts.

(i) Describe the conservation of momentum and energy and include an equation that represents this example.

(ii) What is the speed of each part just after the explosion?

(iii) It is observed that the two parts hit the ground at the same time. What is the distance between the points on the ground where they land? (Assume that the ground is level and neglect air resistance).

Solutions

Expert Solution

(i)

(ii)

(ili)


Related Solutions

A model rocket is shot straight up and explodes at the top of its trajectory into...
A model rocket is shot straight up and explodes at the top of its trajectory into three pieces as viewed from above and shown in the figure below. The masses of the three pieces are mA = 125.0 g, mB = 20.0 g, and mC = 30.0 g. Immediately after the explosion, piece A is traveling at 1.40 m/s, and piece B is traveling at 6.90 m/s in a direction 30° below the negative x axis as shown. What is...
A spring-loaded toy gun shoots straight up, and the toy rocket (m = 250g) reaches a...
A spring-loaded toy gun shoots straight up, and the toy rocket (m = 250g) reaches a maximum height hmax of 15.0 m when the spring is compressed 7.0 cm from its equilibrium position. What is the value of the spring constant, ks? (neglect friction with air and gun and assume an ideal spring)
A rocket is fired vertically upward. At the instant it reaches an altitude of 1450 m...
A rocket is fired vertically upward. At the instant it reaches an altitude of 1450 m and a speed of 265 m/s, it explodes into three equal fragments. One fragment continues to move upward with a speed of 292 m/s following the explosion. The second fragment has a speed of 396 m/s and is moving east right after the explosion. What is the magnitude of the velocity of the third fragment? Answer in units of m/s
A rocket is launched from rest and reaches a position of (65m, 185m) and a velocity...
A rocket is launched from rest and reaches a position of (65m, 185m) and a velocity of (195m/s, 555m/s) when it runs out of fuel. From this time, tbo, it flies a projectile motion path. Find the maximum height above the ground the rocket achieves after running out of fuel Find the time t and position x of the rocket when it hits the ground.
A shot-putter throws the shot with an initial speed of 11.2 m/s from a height of...
A shot-putter throws the shot with an initial speed of 11.2 m/s from a height of 5.00 ft above the ground. What is the range of the shot if the launch angle is (a) 24.0 ∘ , (b) 30.0 ∘ , (c) 42.0 ∘ ?
A tennis ball is it at ground level. The ball reaches its maximum height above the...
A tennis ball is it at ground level. The ball reaches its maximum height above the ground level 1 sec. after being hit. Then 0.9 seconds after reaching its maximum height, the ball barely clears the net that is 3 m from where the tennis ball was hit. Assume the ground is level. How high is the net?  How far beyond the net does the tennis ball strike the ground?
A projectile is fired from the ground, reaches a maximum height of 26.8 m and lands...
A projectile is fired from the ground, reaches a maximum height of 26.8 m and lands a distance of 76.7 m away from the launch point. What was the projectile s launch velocity? A) 28.2 m/s, 54.4 degrees above horizontal B) 22.9 m/s, 27.2 degrees above horizontal C) 16.4 m/s, 16.3 degrees above horizontal D) 42.3 m/s, 8.2 degrees above horizontal
A rocket is fired upward from some initial height above the ground
11. A rocket is fired upward from some initial height above the ground. Its height h in feet above the ground t seconds after it is fired is given by h = -16t2 + 48t +448.(i) What is its initial height? __________ ft. (ii) What is its maximum height? ___________ ft.(iii) How long does it take to reach the ground? __________ sec.
A 1000 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration...
A 1000 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 16 s, then the motor stops. The rocket altitude 20 s after launch is 3600 m. You can ignore any effects of air resistance. What was the rocket's acceleration during the first 16 s?
If an arrow is shot upward on Mars with a speed of 68 m/s, its height...
If an arrow is shot upward on Mars with a speed of 68 m/s, its height in meters t seconds later is given by y = 68t − 1.86t2. (Round your answers to two decimal places.) (a) Find the average speed over the given time intervals. Estimate the speed when t = 1.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT