As a ball falls, its acceleration is... Multiple Choice: A) positive B) negative C) it has no acceleration I know the answer is A) positive. But why? Please...
As a ball falls, its acceleration is... Multiple Choice: A) positive B) negative C) it has no acceleration I know the answer is A) positive. But why? Please...
Which of the following carts is experiencing an unbalanced force? Multiple Choice: A) A cart that is accelerating B) A cart that is traveling at a constant speed C) A cart...
A long jumper achieves a height of 1.5 meters when her initial horizontal velocity is 5m/s. How far does the jumper move horizontally? (Hint: She reaches a height of 1.5 meters halfway through her...
A force of F newtons will give an object with a mass of M an acceleration of A. The same force will give a mass of 3 M an acceleration of: Multiple choice: a) 1/3 A b) 3 A c)...
A baseball player throws a baseball with a horizontal velocity of 100m/s west. The ball hits the ground 0.5 seconds later. 1.) With what vertical velocity does the ball land? 2...
A force of F newtons will give an object with a mass of M an acceleration of A. The same force will give a mass of 3 M an acceleration of: Multiple choice: a) 1/3 A b) 3 A c)...
A baseball player throws a baseball with a horizontal velocity of 100m/s west. The ball hits the ground 0.5 seconds later. A) With what vertical velocity does the ball land? B)...
A long jumper achieves a height of 1.5 meters when her initial horizontal velocity is 5m/s. How far does the jumper move horizontally? (Hint: She reaches a height of 1.5 meters halfway through the...
A backpack full of books weighing 58.0 N rests on a table in a physics laboratory classroom. A spring with a force constant of 140 N/m is attached to the backpack and pulled horizontally, as indicated...
A man is traveling at +96.5km/h when he sees a skunk laying on the road. It takes him 1.25 seconds after seeing the skunk to move his foot from the gas pedal to the brake pedal (during that time...
Please explain all the variables clearly, and the equations too A mountain climber is stranded on a ledge 30m above the ground. Rescuers on the ground want to shoot a projectile to...
A race car starts from rest and travels east along a straight and level track. For the first 5.0 s of the car's motion, the eastward component of the car's velocity is given by υx(t)=(0.820m/s3)t2...
A car enters the freeway with a speed of 7.1 m/s and accelerates uniformly for 3.3 km in 4.3 min. How fast is the car moving after this time? Answer in units of m/s.
A projectile is fired straight up at a speed of 19 m/s. How long does it take to reach the top of its motion? The acceleration due to gravity is 9.8 m/s 2 . Answer in units...
An object is dropped from a height H above the ground. This free-falling object requires 0.607 s to travel the last 41 m before hitting the ground. From what height H above the ground...
R Length Conveyor Speed ? 0.16 96"...
a weather satellite with an orbit about the earth reaches a minimum altitude of 1000 miles and a maximum altitude of 1600 miles. the path of its orbit is approximately an ellipse with the center of...
A satellite dish is shaped like a parabolic reflector. The satellite signals hit the surface of the dish and reflect to a single point, the focus, where the receiver is located. if the the dish is...
A 1,120-kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 3,960 m/s. The radius of the circular orbit is 3.80 × 10^6 m. Determine...
Starting at (0,0) a projectile travels along the path y= -(1/256)x^2 +4x where x is in meters. Find: a. the maximum height b. the range of the projectile c. sketch the path...