Cracking the SAT Physics Subject Test

measured in units of kg · m/s and is a vector (so it has both magnitude and direction). The more momentum an object has, the mor ...

IMPULSE The product of force and the time during which it acts is known as impulse, a term you should be familiar for this test. ...

J = ∆p = pf − pi = pf = mv = (0.42 kg)(30 m/s) = 13 kg · m/s Using the equation , we find that the average force exerted by the ...

4. Using F = ∆p / ∆t, we find that In this case Time Seconds are represented in questions as s. If you see a quantity that ref ...

What is the impulse delivered to the block? Here’s How to Crack It The impulse delivered to the block is equal to the area under ...

shapes to estimate the area beneath it. ...

CONSERVATION OF LINEAR MOMENTUM The law of conservation of linear momentum states that in an isolated system, the total linear m ...

Here, the astronaut + tool are the system. Because of conservation of linear momentum Using distance = rate × time, we find ...

COLLISIONS Conservation of linear momentum is routinely used to analyze collisions. Although the objects involved in a collision ...

Two balls roll toward each other. The red ball has a mass of 0.5 ...

kg and a speed of 4 m/s just before impact. The green ball has a mass of 0.3 kg and a speed of 2 m/s. After the head-on collisio ...

Most of the lost energy was transferred as heat; the two objects are both slightly warmer as a result of the collision. Two bal ...

collision, the speed of block m is 4 times the speed of block M. What is the speed of block M after the collision? Is the colli ...

and Kbefore = Kafter, so the collision is elastic. In the case of two-dimensional collisions (such as two cars colliding at an i ...

Chapter 6 Comprehensive Drill See Chapter 17 for solutions. An object of mass 2 kg has a linear momentum of magnitude 6 kg • m/ ...

(C) mv (D) 2mv (E) 4mv Two objects, one of mass 3 kg and moving with a speed of 2 m/s and the other of mass 5 kg and speed 2 m/ ...

(D) the collision was not elastic and total linear momentum was not conserved (E) None of the above A wooden block of mass M s ...

Key Terms isolated system linear momentum impulse impulse-momentum theorem law of conservation of linear momentum collisions ela ...

Summary Linear momentum is the product of mass and velocity, and it is symbolized by p. Use the formula p = mv. Impulse is the p ...

Chapter 7 Curved and Rotational Motion So far we’ve studied only translational motion—objects sliding, falling, or rising— but y ...