Question

In: Physics

C) A 0.315 kg bird flying along at 6.5 m/s sees a 0.019 kg insect heading...

C) A 0.315 kg bird flying along at 6.5 m/s sees a 0.019 kg insect heading straight toward it with a speed of 23 m/s (as measured by an observer on the ground, not by the bird). The bird opens its mouth wide and enjoys a nice lunch. What is the bird's speed immediately after swallowing the insect? Answer in m/s

D) A 2.6 kg block slides along a frictionless surface at 1 m/s. A second block, sliding at a faster 5.9 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.9 m/s. What was the mass of the second block? Answer in kg

Solutions

Expert Solution


Related Solutions

A bat flying at 4.80 m/s is chasing an insect flying in the same direction. The...
A bat flying at 4.80 m/s is chasing an insect flying in the same direction. The bat emits a 40.0-kHz chirp and receives back an echo at 40.4 kHz. (Take the speed of sound in air to be 340 m/s.) What is speed of insect (m/s)
A 10 kg mass is sliding at 8 m/s along a frictionless floor toward an ideal...
A 10 kg mass is sliding at 8 m/s along a frictionless floor toward an ideal massless spring. When the mass hits the spring, they stick together without any loss of energy. The mass stops briefly at x = +4.2 m before moving back toward equilibrium. (Assume x = 0 at the point at which the mass sticks to the spring and t = 0 when the mass first makes contact with the spring.)a)What is the spring constant of the...
A body of mass 15.0 kg is traveling at 5.3 m/s along the positive x-axis with...
A body of mass 15.0 kg is traveling at 5.3 m/s along the positive x-axis with no external force acting. At a certain instant an internal explosion occurs, splitting the body into two chunks of 7.5 kg mass each. The explosion gives the chunks an additional 16 J of kinetic energy. Neither chunk leaves the line of original motion. Determine the speed and direction of motion of each of the chunks after the explosion. Enter the larger velocity. Enter the...
A 8.71 kg block is sliding along a smooth surface at 11.4 m/s. It travels up...
A 8.71 kg block is sliding along a smooth surface at 11.4 m/s. It travels up a smooth ramp, and comes to a stop. How high above the ground is it when it stops? Report your answer in meters, rounded to two decimal places I attach a 3.06 kg mass to a spring with a spring constant of 72 J/m2 and compress it 0.02 m. What is the speed the mass reaches when launched horizontally? Report your answer in m/s,...
A 3 kg object is moving along the +y+y direction with a speed of 4 m/s...
A 3 kg object is moving along the +y+y direction with a speed of 4 m/s when it experiences an impulse of 5i^−8j^5i^−8j^ Ns. What is the object's speed after the impulse is applied?
A 4100 kg open railroad car coasts along with a constant speed of 9.90 m/s on...
A 4100 kg open railroad car coasts along with a constant speed of 9.90 m/s on a level track. Snow begins to fall vertically and fills the car at a rate of 5.00 kg/min . Ignoring friction with the tracks, what is the speed of the car after 80.0 min ?
A 2.90-kg box is sliding along a frictionless horizontal surface with a speed of 1.8 m/s...
A 2.90-kg box is sliding along a frictionless horizontal surface with a speed of 1.8 m/s when it encounters a spring. (a) Determine the force constant of the spring, if the box compresses the spring 5.30 cm before coming to rest. (b) Determine the initial speed the box would need in order to compress the spring by 1.50 cm.
The person’s mass, m= 68.1 kg, the unknown drag coefficient is, c , with units kg/s,...
The person’s mass, m= 68.1 kg, the unknown drag coefficient is, c , with units kg/s, and the local acceleration of gravity is g= 9.80 m/s2 . Our model for the person’s velocity vs time gave us a linear differential equation whose analytical solution was the following: V(t) = g*m/c*[1-exp(-c/m*t)]. Your job is to find “c”. You need to use the MATLAB “help” documentation to find the nonlinear curve fitting function and syntax for how to use it. Hint you...
An airplane is flying with a velocity of 240 m/s at an angle of 30.0° with...
An airplane is flying with a velocity of 240 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.4 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle θ?
Exhaust gases exit a combustıon test rig at 600°C and flow at 0.1 kg/s along a...
Exhaust gases exit a combustıon test rig at 600°C and flow at 0.1 kg/s along a 5 m length of 4 cm-O.D.2 mm wall-thickness steel tube suspended from the roof of the laboratory.An estimate of the tube wall temperature is required for an ambient temperature of 22°C.Assume that the inside and wall resistances are not negligible ,take into consideration the inside and wall resistances.and that the heat loss from the outside is by natural convection and radiation (ε=0.9 for the...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT