5. A Green projectile has an initial velocity of 20.0 m/s at an angle of 35.0° with respect to the x-direction and is initially at ground level. a) A Blue object is initially at ground level, 15.0 meters in front of the Green object. If it is launched straight upward at the same time the Green projectile is launched, what should its initially velocity be if it is to collide with the Green object? Let the Blue object be traveling upward when they collide. b) What is the velocity of the Blue object as it collides with the Green projectile? c) If the Blue object actually had an initial velocity of 50 m/s j, how long after the Green projectile is launched should the Blue object be launched if they are to collide? Let the Blue object be traveling upward when they collide. V.=S0mis

Can someone please tell me if I did this problem correctly? Thank you!

What would an observer inside an elevator measure for the free‑fall acceleration ay near the surface of Earth if the elevator accelerates downward at 9.00 m/s2? Define the positive direction of motion as upward, away from Earth's surface. ay = ? m/s^2

You are the pilot of a spacecraft intended for travel at very high speeds. Before leaving you measure the spacecraft to be 31.4 m long and have a mass of 5.28 x 104 kg. During your travel, you pass a planet and exchange information with an observer on the planet. You are told that your spacecraft has been measured to be 28.6 m long. a. How fast is your spacecraft travelling with respect to the planet? b. You are told there is a nearby planet that is stationary with respect to the first planet. The observer on the first planet says it will take you 25 s to reach the nearby planet. How far away does your co-pilot on the spacecraft say the nearby planet is? c. How much energy was required to accelerate your spacecraft to this speed?

I am lost on the step by step in step #2: can you please break them down. thanks! The acceleration due to gravity at altitude h is given by gh = GMR + h2= GM(R+3.30R)2= 1(4.30)2×GMR2= 118.49×9.8 m/s2= 0.530 m/s2 The acceleration of meteoroid due to earth's gravitation is equals to 0.530 m/s2

3) The new Earth-Pluto SuperShuttle boasts that it can take you between the two planets, which are 5.0 hours apart in 2.5 hours (according to your watch). What time interval is measured by people in the Earth-Pluto frame? What is the shuttle's speed?

Link has to travel to Hyrule castle. Link is currently in the Gerudo desert. The desert sand stretches south for 2 kilometers (km) from where Link is standing. The castle is 3 km south of Link and 5 km east of him. Link can run at a speed of 4 km/h in the sand and at a speed of 6 km/h in the field. How fast (in hours) can Link arrive to Hyrule castle? (Round your answer to 4 decimal digits). Field Answer: Link SAND 5km 4 km X Castle 2km

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