A dime is placed at the edge of a table so it hangs over slightly. A quarter is slid horizontally on the table surface perpendicular to the edge and hits the dime head on. Which coin hits the ground first?

A little youngster pulls a toy block up a steep hill before releasing it at the top. He believes the block will fall in his room, but his sister believes he is attempting to fire it into her room across the corridor. Mom isn't going to be pleased if she goes down the hall and steps on the block. Assume the incline's upper end is 1.00 m (horizontally) from the boy's door, and the hallway is 1.00 m wide. Who is correct? This issue, as a whole, does not fit any of the problem types you've learnt; nevertheless, it may be divided into three individual problems. The steps below will walk you through them. There is just one evaluation required. (a) A kid pulls a 0.750 kg wooden block up an incline with an 8.43 N force that is parallel to the slope (rather than horizontal, which is more difficult). The inclination is at an angle, and the kinetic friction coefficient between the block and the incline is 0.178. Determine the acceleration of a block with a 28.0° angle and a length of 0.463 m. (c)…

An industrious chipmunk creates an acorn catapult. This acorn catapult fires a 0.00543 kg acorn at an initial speed of 21.8 m/s. The catapult can be moved to any horizontal distance from the target and it can be set to shoot the acorn at any angle between 14° and 86.6°. The chipmunk will adjust the distance and angle until he gets a shot just right, and he deems a shot to be successful when the target is hit at the moment the acorn reaches its apex d) If the acorn hits the target and bounces back, losing 24.2% of its speed in the collision, what is the magnitude of the change in the acorn's momentum from immediately before the collision to immediately after the collision? e) If the duration of the collision described in part D is 3.01 x 10^-5 s, what is the magnitude of the average force the acorn imparts onto the target?

An old Biblical story tells of David, a small warrior engaged in man-to-man combat with Goliath, a much larger adversary. In the story, David uses a sling to increase the speed of a projectile (in this case a rock), striking Goliath in the forehead and killing him. O The type of sling often used in such combat consists of a long strip of cloth with a pouch halfway down its length. The rock is positioned in the pouch, with the warrior holding both ends of the sling. By whirling the sling in a horizontal circle, a warrior can release one end of the sling, thereby allowing the projectile to fly in a straight line at high speed. Historically, warriors and hunters typically used a vertical circle, but the circle used here is horizontal for simplicity. In this problem, assume that the sling, when unfolded, was roughly R = 5.54 ft in total length and that the rock weighed a half a pound. If David whirled the sling such that the sling was at an angle 0 = 4.73° below the horizontal, with what…

A golf ball (m = 67.8 g) is hit by a clab that makes an angle of 25.1° with the horizontal. The ball lands 222 m away on a flat fairway. The acceleration of gravity is 9.8 m/s2. If the golf club and ball are in contact for 3.34 ms, what is the average force of impact? Neglect air resistance. Answer in units of N.

A projectile is launched horizontally off from a tall building at a sped of 50m/s. After three seconds, the speed of the projectile is closest to b O c Od 40 m/s 50 m/s 60 m/s 30 m/s

A small object is initially at rest at the top of a large solid sphere that is fixed on the ground. The small object then begins to slide along the surface of the large solid sphere, without friction. V₁ = 0 RI Part (a) Find the angle at which the small object loses contact with the large solid sphere. Part (b) Find the maximum horizontal distance traveled by the small object before it hits the ground. Take (xi, y₁) = (0,2R) as the coordinates for the top of the large solid sphere.

A person driving on I-82 glanced at his phone to read a very important text message.  When he looked back up at the road, he saw that the traffic ahead had come to a standstill and he immediately slammed on his brakes.  His car created 96.5 m long skid marks before rear-ending another car.  Unfortunately, a passenger in the rear-ended car was seriously injured, thus requiring an investigation by the State Patrol.  The State Patrol has no proof of distracted driving, however they want to determine if a citation for speeding should be issued.   A State Patrol investigator used a 3.9 kg drag sled to determine the coefficient of kinetic friction between the road and the tires of the car.  The drag sled’s spring scale read 28 N when it was pulled along the ground at a constant speed.   Use Newton’s Second Law and kinematics to estimate the minimum value of the car’s speed when the driver locked the brakes. (answer: about 83 mi/hr)   Note: You do not need the mass of the car to answer this…

Children playing in a playground on the flat roof of a city school lose their ball to the parking lot below. One of the teachers kicks the ball back up to the children as shown in the figure below. The playground is 4.80 m above the parking lot, and the school building's vertical wall is h = 6.30 m high, forming a 1.50 m high railing around the playground. The ball is launched at an angle of 0 53.0° above the horizontal at a point d 24.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall. (Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.) = = (a) Find the speed (in m/s) at which the ball was launched. x What trigonometric function should you use to find the x-component of the initial velocity? m/s

You aim a rifle horizontally in a perfectly flat field while your friend holds a bullet at the same height as your rifle. You fire the rifle and your friend simply opens her hand simultaneously, allowing the bullet to drop. Your friend claims that both bullets hit the ground at the same moment. Do you agree? Justify your answer. Ignore air resistance.