What is the impulse on a $3.0 \text{ kg}$ particle that experiences the force described by the graph?

hat is the impulse on a $3.0 \mathrm{~kg}$ object that experiences the force described by the graph in as we discussed earlier?

$$\dfrac{px-py+qx-qy}{px+qx+py+qy}$$

A small, 100 g cart is moving at 1.20 m/s on a frictionless track when it collides with a larger, 1.00 kg cart at rest. After the collision, the small cart recoils at 0.850 m/s. What is the speed of the large cart after the collision?

A 5000 kg train car, with its top open, is rolling on frictionless rails at 22.0 m/s. What mass of water has collected in the car?

A 71 kg baseball player jumps straight up to catch a hard-hit ball. If the 140 g ball is moving horizontally at 28 m/s, and the catch is made when the ballplayer is at the highest point of his leap, what is his speed immediately after stopping the ball?

Curling is a sport played with $20\ \text{kg}$ stones that slide across an ice surface. Suppose a curling stone sliding at $2.5\ \frac{\text{m}}{\text{s}}$ strikes another stone and comes to rest in $2.5\ \text{ms}$. What is the average force on the stone during the impact?

a.) 40,000N
b.) 200,000 N
c.) 4,000N
d.) 20,000 N

A $5.0\text{ kg}$ mass hanging from a spring scale is slowly lowered onto a vertical spring.

a) What does the spring scale read just before the mass touches the lower spring?$\\$ b) The scale reads$18 when the lower spring has been compressed by $2.0\text{ cm}$. What is the value of the spring constant for the lower spring? c) At what compression length will the scale read zero?

A disk rotates freely on a vertical axis with an angular velocity of 30 rpm. An identical disk rotates above it in the same direction about the same axis, but without touching the lower disk, at 20 rpm. The upper disk then drops onto the lower disk. After a short time, because of friction, they rotate together. The final angular velocity of the disks is A. 50 rpm B. 40 rpm C. 25 rpm D. 20 rpm E. 10 rpm

Curling is a sport played with 20 kg stones that slide across an ice surface. Suppose a curling stone sliding at 1 m/s strikes another, stationery stone and comes to rest in 2 ms. Approximately how much force is there on the stone during the impact? A. 200 N B. 1000 N C. 2000 N D. 10,000 N

As part of a safety investigation, two 1400 kg cars traveling at 20 m/s are crashed into different barriers. Find the average forces exerted on (a) the car that hits a line of water barrels and takes 1.5 s to stop, and (b) the car that hits a concrete barrier and takes 0.10 s to stop.

A $500 \mathrm{~g}$ particle has velocity $v_x=-5.0 \mathrm{~m} / \mathrm{s}$ at $t=-2 \mathrm{~s}$. Force $F_x=\left(4-t^2\right) \mathrm{N}$, where $t$ is in $\mathrm{s}$, is exerted on the particle between $t=-2 \mathrm{~s}$ and $t=2 \mathrm{~s}$. This force increases from $0 \mathrm{~N}$ at $t=-2 \mathrm{~s}$ to $4 \mathrm{~N}$ at $t=0 \mathrm{~s}$ and then back to $0 \mathrm{~N}$ at $t=2 \mathrm{~s}$. What is the particle's velocity at $t=2 \mathrm{~s}$ ?

A 5.0kg mass hanging from a spring scale is slowly lowered onto a vertical spring. What does the spring scale read just before the mass touches the lower spring?

A 10 g bullet is fired into a 10 kg wood block that is at rest on a wood table. The block, with the bullet embedded, slides 5.0 cm across the table. What was the speed of the bullet?