Basic Physics Questions and Answers

Car A is traveling and has momentum P. Car B is traveling and has momentum 2P. What are two possible differences between cars A and B? Car B has larger mass OR car B has faster speed. Car B has smaller mass OR car B has slower speed. Car B has smaller mass OR car B has faster speed. Car B has larger mass OR car B has slower speed.

A 6-pounder field gun (cannon) used during the American Civil War has a mass of 405 kg and uses a cannonball with a mass of 2.40 kg. If the cannonball is fired with a speed of 470 m/s what is the recoil speed of the cannon? 3.7 m/s 2.1 m/s 0.5 m/s 2.8 m/s

A 10-kg rock and 20-kg rock are dropped from the same height and experience no significant air resistance. If it takes the 20-kg rock a time t to reach the ground, what time will it take the 10-kg rock to reach the ground? t 2t 4t t/2

___ is usually the most effective treatment for phobias, such as fear of dogs or of public speaking. Cognitive therapy Family intervention therapy Exposure therapy Psychoanalysis

Two balls are traveling towards each other an have an inelastic collision. Ball A has a mass of 3.1 kg and a velocity of 1.00 m/s to the right while ball B has a mass of 1.9 kg and a velocity of 1.80 m/s to the left. After the collision, ball A has a velocity of 0.50 m/s to the left. Find the velocity of ball B and use that to find out the group total final kinetic energy. 7.7 J 2.5 J 0.8 J 1.4 J

A wheel is rotating counter clock-wise and slowing down. What are the signs of the angular velocity and acceleration? Both, the angular velocity and acceleration are negative. The angular velocity is negative and the angular acceleration is positive. The angular velocity is positive and the angular acceleration is negative. Both, the angular velocity and acceleration are positive.

An object is moving with constant non-zero velocity. Which one of the following statements about it must be true? its acceleration is in the same direction as its velocity, The net force on the object is zero. A constant non-zero net force is being applied to it in the direction of motion A constant non-zero net force is being applied to it opposite to the direction of motion A constant non-zero net force is being applied to it perpendicular to the direction of motion

A particle moves along line segments from the origin to the points (2, 0, 0), (2, 2, 1), (0, 2, 1), and back to the origin under the influence of the force field below. Find the work done. F(x,y,z) = z²i + 3xyj + 2y²k

A tsunami is a series of huge waves caused by earthquakes under water. If a tsunami is traveling at 970 km/h with a wavelength of 450 km, what is the frequency of the wave? 5.99 x 10^-10 Hz 5.99 x 10^-4 Hz 5.99 x 10^0 Hz 5.99 x 10^-7 Hz

All of the following are critiques of using drug therapies for treating psychological disorders EXCEPT There are very few drugs available for treating psychological disorders. Side-effects of medications cause some people to discontinue treatment too early. The effect of medications is partly due to placebo effect. The promise of drug therapies can cause us to disregard other effective treatments.

According to operant conditioning theory, the frequency of a behavior can be increased by following it with a wide variety of reinforcers normal development must be understood in relation to each culture's life situation the frequency of a behavior can be increased through punishment, such as disapproval the id develops as parents insist that children conform to the values of society

The force of gravity on the "surface" Mars is a little less than half the gravitational force on Earth's surface. It an object has a mass of 102 kg and a weight of 1000 N on Earth, what would be the object's approximate mass and weight on Mars? 51 kg and 2000 N 102 kg and 2000 N 204 kg and 1000 N 102 kg and 500 N

Which of the following is not a hit used in Badminton? Underhand Serve Spike Drop Clear

How did the Civil War impact the Southern economy? The destruction of southern railroads benefited steamboat and shipping businesses who used the oceans and rivers to send supplies to cities across the South. The destruction of southern railroads limited southern exports from reaching the North, which reduced tax revenue for southern states. The destruction of southern railroads benefited southern laborers because new employment opportunities became available. The destruction of southern railroads limited the South's ability to import and export resources, which restricted the South's economic recovery from the war.

In 1865, the Ku Klux Klan was founded as a social club for Confederate veterans of the Civil War who felt disempowered once the Union regained control of the South. At first, the Klan was a rowdy bunch of young Southern men who dressed up in sheets and rode their horses through the dark countryside. Very quickly, however, they realized the power they had to inspire terror, especially among the many displaced freed slaves. The Klan began to take violent action to preserve white supremacy in the South despite the reforms instituted under Radical Reconstruction. They beat and lynched freed blacks, Northern carpetbaggers, and Northern sympathizers and supporters. Soon, news of the Klan's actions and goals spread, and within a year there were a number of Klan organizations in various counties and states in the South. The Klan had its first organizational meeting in April 1867, and Confederate general Nathan Bedford Forrest assumed leadership as the Klan's first Grand Wizard. Despite the early attempts at centralized organization, it continued to operate primarily as a collection of independent local groups bound together loosely by racist and anti-Northern ideologies. How did the result of the Civil War impact the culture of the South?. In support of former Confederate soldiers, white southerners elected Nathan Bedford Forrest to Congress because he promised to oppose the reforms instituted by Radical Reconstruction. Angered by northern interference in southern society, white southerners developed methods to intimidate and limit the rights of African Americans in an effort to maintain supremacy. Angered by northern interference in the South's Reconstruction effort, white southerners organized social groups to support the election carpetbaggers who held anti-Northern ideologies. In support of former Confederate soldiers, white southerners established an organization that used terror tactics to fight against nativist ideologies spread by former Union soldiers.

In kickball you can throw the ball at someone to get them out, you can also do this in whiffle ball True False