The thrust created by a lone jet engine produces a force of F = 78000 N. It takes the aircraft (with a mass of m = 7300 kg) a distance of d = 0.71 km to take off. a.) What is the take-off speed of the aircraft vt in m/s? b.) How far in meters would you need to depress a giant spring k = 100,000 N/m in order to launch the aircraft at the same speed without help from the engine?

Two objects are connected by a light string passing over a light, frictionless pulley. The 5.00-kg object is released from rest at a point 4.00 m above the floor. Find the speed of the 5.00-kg object when it is 1 meter above the floor. m, = 5.00 kg h = 4.00 m m, = 3.00 kg 4.756 m/s 3.834 m/s 4.475 m/s 3.942 m/s 4.135 m/s 3.384 m/s А. D. В. Е. С. F.

Help me please

A ball with mass of 300 g is held on top of a vertical spring that has been compressed by 10 cm. The springhas a natural length of 50 cm and a spring constant of 720 N/m. Once the ball is released, the spring shootsthe ball up in the air. What upward speed will the ball have when it leaves the spring (at the spring’s naturallength)? How high above the ground will the ball go?

A 700,000 g roller coaster car traveling at 70.0 mph is stopped by a spring with a spring constant of 50,000 N/m. by how much does the spring compress in stopping the car?

A-C please!

A spring with a constant k=100 N/m is placed after point-C in the frictionless ABC path. A ball of mass of 2 kg is initially at rest and released from point A. The ball travels through the ABC path and finally hits the spring. What is the velocity of the ball at point B and C?. What is the maximum compression in he spring? (9.8 m/s^2)

A 356 g block is dropped onto a relaxed vertical spring that has a spring constant of k 1.7 N/cm. The block becomes attached to the spring and compresses the spring 12.6 cm before momentarily stopping. What is the speed of the block just before it hits the spring (assume that friction is negligible)? (Your result must be in m/s and include 1 digit after the decimal point. Maximum of 5% of error is accepted in your answer. Take g-9.8 m/s?.)

A 0.25 kg mass is placed on a vertically oriented spring that is stretched 0.56 meters from its equilibrium position. If the spring constant is 105 N/m, how fast will the mass be moving when it reaches the equilibrium position? Hint: You cannot ignore the change in gravitational potential energy in this problem. Please give you’re answer in m/s.

I'm trying to find the block's velocity once it leaves the spring. A block of mass, 1.8 kg is attached and secured to an end of a spring with a spring constant of 10,000 N/cm. The other end of the spring is secured to the wall. The block is pushed against the spring, which compresses the spring to a position of x = -0.04 cm. When uncompressed, the end of the spring that is attached to the block is at a position of x = 0.00 cm. The block/spring system is then released from rest, and the block travels along a rough horizontal track for the length of the spring. At 0.00 cm the surface changes. Can you help me calculate the block's velocity once it leaves the spring? Thank you.