Physics Question

Q: How does the direction of acceleration compare with the direction of net force that produces it?

A: Write the expression for acceleration,

Q: Which has greater momentum, a heavy truck at rest or a moving skateboard?

A: Moving skater board has more momentum. The momentum of the object is the product of mass and velocit...

Q: A crate remains stationary after it has been placed on aramp inclined at an angle with the horizonta...

A: When an object is at rest on a inclined ramp then the frictional force acting on the body is equal t...

Q: A figure skater glides along a circular path of radius 5.00 m. Ifshe coasts around one half of the c...

A: a). The skated distance by the skater is depicted below,

Q: A tennis player moves in astraight-line path as shownin Figure P2.8. Find her averagevelocity in the...

A: a).The formula used to calculate the average velocity is,

Q: Estimate the time duration of each of the following inthe suggested units in parentheses: (a) a hear...

A: (a)  Time duration of a heartbeat in seconds is 1s.(b) Time duration of a football game in hours is ...

Q: For each of the following interactions, identify action and reaction forces (a) A hammer hits a nail...

A: (a)  The action force is the force the hammer exerts on the nail when the hammer hits the nail , and...

Q: A cruise ship sails due north at 4.50 m/s while a Coast Guardpatrol boat heads 45.0° north of west a...

A: Given:Velocity of ship = 4.50 m/s (north)Velocity of boat head = 45o north of west at 5.20 m/s

Q: Figure CQ2.6 shows strobe photographs taken of a disk movingfrom left to right under different condi...

A: The velocity is the time of rate of displacement. The acceleration is the rate of change of velocity...

Q: A horizontal force of 95.0 N is applied to a 60.0-kg crate on arough, level surface. If the crate ac...

A: Applied force and kinetic frictional force is related by,

Q: Carry out the following arithmetic operations: (a) the sum ofthe measured values 756, 37.2, 0.83, an...

A:

Q: An airplane flies 2.00 x 102 km due west from city A tocity B and then 3.00 x 102 km in the directio...

A: The diagram is for the airplane is given below:

Q: What happens to the magnitude of the normal vector on a block resting on an incline when the angle o...

A: There is a decrease in the value of the vertical component until it reaches the maximum height and t...

Q: Estimate the order of magnitude of the length, in meters, ofeach of the following: (a) a mouse, (b) ...

A: The approximate length of a mouse is from 7.5 cm to 11 cm somewhere, depending upon the type of mous...

Q: Please provide ample explanations for both multiple choice questions

A: 1. The cart’s acceleration is not related to the ball. In fact, the ball has no horizontal accelerat...

Q: Consider a mass of 1kg accelerated 1m/s2by a force of 1N. Show that the acceleration would be the sa...

A: the expression for acceleration is, 

Q: Calculate the resultant of a horizontal vector with the magnitude of 4 units and a vertical vector w...

A: OB is the horizontal vector, BA is the vertical vector and the resultant is OA.

Q: A projectile is launched with an initial speed of 60.0 m/s at anangle of 30.0° above the horizontal....

A: Given,

Q: Two forces are applied to acar in an effort to move it,as shown in Figure P4.12.(a) What is the resu...

A: Given

Q: A 75 kg student jumps off a bridge with a 12-m-long bungee cord tied to his feet. The massless bunge...

A: (a) The gravitational potential energy is converted into the spring potential energy

Q: What is the impulse of 8-kg ball rolling at 2m/s when it bumps into pillow and stops?

A: Formula for the impulse is:

Q: A hockey player is standing on his skates on a frozen pondwhen an opposing player, moving with a uni...

A: Write the expression for the position of the opponent

Q: Only a small amount of the energy used in an incandescent light bulb (regular bulbs commonly used in...

A: It is true that only small amount of incandescent light is actually converted into light the rest of...

Q: The force exerted by the wind on the sails of a sailboat is390 N north. The water exerts a force of ...

A: Draw the free-body diagram of the sailboat.

Q: A girl delivering newspapers covers her route by traveling3.00 blocks west, 4.00 blocks north, and t...

A: Given:A girl travels 3.00 blocks west, 4.00 blocks north and 6.00 blocks east.

Q: Two rocks collide with each other in outer space, far from all other objects. Rock 1 with mass 5 kg ...

A: Given:For rock1:Mass = 5 kgInitial velocity = (30, 45, -20)Final velocity = (-10, 50, -5)For rock2:M...

Q: A mountain climber stands at the top of a 50.0 - m cliff thatoverhangs a calm pool of water. She thr...

A:

Q: Explain whether the following particles do or do not have anacceleration: (a) a particle moving in a...

A:

Q: (a) What force causes an automobile to move? (b) A propeller-driven airplane? (c) A rowboat?

A: (a) The friction force between the tires of automobile and the road way is the cause of the automobi...

Q: Which is greater, an acceleration from 25km/h to 30km/h or one from 96km/h to 100km/h if both occur ...

A: The acceleration from 25km/h to 30km/h is greater than the acceleration from 96km/h to 100km/h since...

Q: An object with a mass of 1 kg weighs approximately 2 lb. Usethis information to estimate the mass of...

A: (a) Mass of a baseball is approximately 145 grams. Converting into pounds,

Q: In Figure P1.49, find (a) the side opposite θ, (b) the side adjacentto ϕ, (c) cos θ, (d) sin ϕ, and ...

A: Given:

Q: Four forces act on an object, given by Á = 40.0 Neast, B = 50.0 north, C = 70.0 N west, and D = 90.0...

A:

Q: A ball is thrown straight upward and returns to the thrower’shand after 3.00 s in the air. A second ...

A: (a)

Q: A projectile is launched with speed v0 at an angle θ0 above thehorizon. Its motion is described in t...

A: (a) In a projectile motion, there is no force acting along the horizontal direction. So, the acceler...

Q: A truck tractor pulls two trailers, one behind the other, at aconstant speed of 1.00x 102 km/h. It t...

A: Once the truck is fully on the bridge (after 0.600s), it will cover the length of the bridge (4.00*1...

Q: One of Aesop’s fables tells of a race between a tortoiseand a hare. Suppose the overconfident hare t...

A: Write the expression for time taken by the hare

Q: which warms more quickly in sunlight -a colourless or coloured piece of glass? Also explain Why?

A: A coloured glass can absorb all the colours except its own colour while the colourless glass can’t a...

Q: One of the fastest recorded pitches in major league baseball, thrown by Tim Lincecum in 2009, was cl...

A: Given,

Q: An airplane in a holding pattern flies at constant altitude alonga circular path of radius 3.50 km. ...

A: (a)The magnitude of the displacement airplane path is,Substitute the values,

Q: A steel ladder of mass 40 kg and of length 20 m leans against a frictionless wall at a point 16 m ab...

A: Situation of the problem has been shown in the figure.

Q: As you leap upward in a standing jump, how does the force that you exert on the ground compare with ...

A: According to Newton’s second law of motion,

Q: One pound is the same as 4.45 newtons. What is the weight in pounds of 1 newton?

A: one  pound is 4.45 Newton, therefore one newton is 1 divided by 4.45 to gives the weight in pounds a...

Q: In 1865 Jules Verne proposed sending men to the Moonby firing a space capsule from a 220-m-long cann...

A: The formula used to calculate the acceleration of the space traveler is,

Q: When you push against a wall with your fingers, they bend because they experience a force. Identify ...

A: Pushing against a wall means applying a force of an arbitrary magnitude F1 on the wall.When fingers ...

Q: A horizontal syringe is used to make an injection into a vein (Fig. 3). The barrel of the syringe ha...

A: (a)A force applied to the circular piston,

Q: A daredevil is shot out of a cannon at 45.0° to the horizontalwith an initial speed of 25.0 m/s. A n...

A:  Given:Angle = 45oInitial velocity = 25 m/sHorizontal distance, d = 50  m

Q: The period of a simple pendulum, defined as the time neces- sary for one complete oscillation, is me...

A: Equation for time period of simple pendulum is,

Q: If you push on a heavy box that is at rest, you must exert someforce to start its motion. Once the b...

A: For a stationary block the resisting force is static frictional force.For a block in motion the resi...