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The speed of target and kinetic energy of arrow and target
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A new fun foam target on wheels for archery students has been invented. The arrow of...
An archer shoots an 0.4kg arrow with a velocity of +98.00 m/s at a 4.50kg target
An archer shoots an 0.4kg arrow with a velocity of +98.00 m/s at a 4.50kg target. Just before impact, the target was moving toward the archer with at 6.00m/s. The arrow then strikes the target and exits with a velocity of +50.00 m/s. (a)What is the final velocity of the target after impact? (b)What is the minimum amount of kinetic energy required to conserve the momentum of the system? (c)What is the velocity of the zero momentum frame, vem, for this system? (d)Using ,...
An archer shoots an arrow toward a 300-g target that is sliding in her direction at...
An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.45 m/s on a smooth, slippery surface. The 22.5-g arrow is shot with a speed of 35.5 m/s and passes through the target, which is stopped by the impact. What is the speed of the arrow after passing through the target? A railroad car of mass 2.35 times 10^4 kg moving at 2.50 m/s collides and couples with two coupled railroad...
A child's toy consists of a block that attaches to a table with a suction cup,...
A child's toy consists of a block that attaches to a table with
a suction cup, a spring connected to that block, a ball, and a
launching ramp. (Intro 1 figure) The spring has a spring constant
, the ball has a mass , and the ramp rises a height above the table, the surface of which is a height
above the floor.
Initially, the spring rests at its equilibrium length. The spring
then is compressed a distance , where...
A child's toy consists of a block that attaches to a table with a suction cup,...
A child's toy consists of a block that attaches to a table with
a suction cup, a spring connected to that block, a ball, and a
launching ramp. (Figure 1)The spring has a spring constant k, the
ball has a mass m, and the ramp rises a height y above the table,
the surface of which is a height H above the floor. Initially, the
spring rests at its equilibrium length. The spring then is
compressed a distance s, where...
(non calculus based physics) Question 1 An Olympic weight lifter lifts an 1800 N set of...
(non calculus based physics) Question 1 An Olympic weight lifter lifts an 1800 N set of weights from the ground to a vertical distance of 2.20 m above his head. Assuming he moves the weights at constant speed, how much work does the weight lifter do? Question 2 A 4.5 kg trunk, initially at rest, takes 2.0 s to slide 2.8 m down a rough 25° slope. Calculate: the work performed by the force of gravity. the amount of mechanical...
1. A pole is held vertically by attaching wires at a height of 13.4 m above...
1. A pole is held vertically by attaching wires at a height of 13.4 m above the ground. The other end of each wire is anchored in the ground at a distance of 9.54 m from the base of the pole. The pole makes a right angle with the ground. What is the length of each wire? 2. A bug crawls 2.25 m along the base of a wall. Upon reaching a corner, the bug's direction of travel changes from...
2. The electric vehicle Tesla Model S has a drag coefficient of 0.24, a mass of 2100 kg, and a frontal area of 2.4 m2....
2. The electric vehicle Tesla Model S has a drag coefficient of 0.24, a mass of 2100 kg, and a frontal area of 2.4 m2. The coefficient of rolling resistance of its tires is 0.01. Recall the density of air at sea level is 1.3 kg/m3. How much kinetic energy is required to overcome rolling resistance and air resistance (drag) at Autobahn speeds of 180 km/hr for a 200 km trip? How much useful energy (in MJ) and money (in...
An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.45 m/s on a smooth, slippery surface. The 22.5-g arrow is shot with a speed of 35.5 m/s and passes through the target, which is stopped by the impact. What is the speed of the arrow after passing through the target? A railroad car of mass 2.35 times 10^4 kg moving at 2.50 m/s collides and couples with two coupled railroad...
A child's toy consists of a block that attaches to a table with
a suction cup, a spring connected to that block, a ball, and a
launching ramp. (Intro 1 figure) The spring has a spring constant
, the ball has a mass , and the ramp rises a height above the table, the surface of which is a height
above the floor.
Initially, the spring rests at its equilibrium length. The spring
then is compressed a distance , where...
A child's toy consists of a block that attaches to a table with
a suction cup, a spring connected to that block, a ball, and a
launching ramp. (Figure 1)The spring has a spring constant k, the
ball has a mass m, and the ramp rises a height y above the table,
the surface of which is a height H above the floor. Initially, the
spring rests at its equilibrium length. The spring then is
compressed a distance s, where...
2. The electric vehicle Tesla Model S has a drag coefficient of 0.24, a mass of 2100 kg, and a frontal area of 2.4 m2. The coefficient of rolling resistance of its tires is 0.01. Recall the density of air at sea level is 1.3 kg/m3. How much kinetic energy is required to overcome rolling resistance and air resistance (drag) at Autobahn speeds of 180 km/hr for a 200 km trip? How much useful energy (in MJ) and money (in...
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