Exam (elaborations)
Physics Test (Ch6-8, 10) Exam A with 180 Questions and Answers RATED A+ 2023|2024 LATEST UPDATE
- Course
- Institution
Physics Test (Ch6-8, 10) Exam A with 180 Questions and Answers RATED A+ 2023|2024 LATEST UPDATE
[Show more]
Content preview
Physics Test (Ch6 -8, 10) Exam A with 1 80 Questions and Answers RATED A+ 2023|2024 LATEST UPDATE A 0.060 -kg tennis ball, initially moving at a speed of 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change in momentum of the ball? A) 0.36 kgoem/s B) 0.72 kgoem/s C) 1.1 kgoem/s D) 1.8 kgoem/s - ✔✔ANSW✔✔D A 0.10 -kg ball is dropped onto a table top. The speeds of the ball right before and right after hitting the table top are 5.0 m/s and 4.0 m/s, respectively. If the collision between the ball and the table top lasts 0.15 s, what is the magnitude of the average force exerted on the ball by the table top? A) 0.67 N B) 1.3 N C) 3.0 N D) 6.0 N - ✔✔ANSW✔✔D A 0.10 -kg object with a velocity of 0.20 m/s in the +x direction makes a head -on elastic collision with a 0.15 kg object initially at rest. What is the final velocity of the 0.10 -kg object after collision? A) -0.16 m/s B) +0.16 m/s C) -0.040 m/s D) +0.040 m/s - ✔✔ANSW✔✔C A 0.300 -kg mass, attached to the end of a 0.750 -m string, is whirled around in a smooth level table. If the maximum tension that the string can withstand is 250 N, then what maximum linear speed can the mass have if the string is not to break? A) 19.4 m/s B) 22.4 m/s C) 25.0 m/s D) 32.7 m/s - ✔✔ANSW✔✔C A 1.0 -kg ball falls to the floor. When it is 0.70 m above the floor, its potential energy exactly equals its kinetic energy. How fast is it moving? A) 3.7 m/s B) 6.9 m/s C) 14 m/s D) 45 m/s - ✔✔ANSW✔✔A A 1.0 -m3 object floats in water with 20% of it above the waterline. What does the object weigh out of the water? A) 1,960 N B) 7,840 N C) 9,800 N D) 11,800 N - ✔✔ANSW✔✔B A 1.53 -kg mass hangs on a rope wrapped around a frictionless disk pulley of mass 7.07 kg and radius 66.0 cm. What is the acceleration of the mass? A) 9.26 m/s2 B) 2.96 m/s2 C) 6.29 m/s2 D) zero - ✔✔ANSW✔✔B A 1.53 -kg mass hangs on a rope wrapped around a frictionless disk pulley of mass 7.07 kg and radius 66.0 cm. What is the angular acceleration of the pulley? A) 4.49 rad/s2 B) 7.98 rad/s2 C) 9.87 rad/s2 D) zero - ✔✔ANSW✔✔A A 10-kg mass is moving with a speed of 5.0 m/s. How much work is required to stop the mass? A) 50 J B) 75 J C) 100 J D) 125 J - ✔✔ANSW✔✔D A 10-kg mass, hung onto a spring, causes the spring to stretch 2.0 cm. What is the spring constant? A) 4.9 ˛ 103 N/m B) 5.0 ˛ 103 N/m C) 20 N/m D) 2.0 N/m - ✔✔ANSW✔✔A A 10-N force is needed to move an object with a constant velocity of 5.0 m/s. What power must be delivered to the object by the force? A) 0.50 W B) 1.0 W C) 50 W D) 100 W - ✔✔ANSW✔✔C A 10.0 -g bullet moving at 300 m/s is fired into a 1.00 -kg block at rest. The bullet emerges (the bullet does not get embedded in the block) with half of its original speed. What is the velocity of the block right after the collision? A) 1.50 m/s B) 2.97 m/s C) 3.00 m/s D) 273 m/s - ✔✔ANSW✔✔A A 100 -N force has a horizontal component of 80 N and a vertical component of 60 N. The force is applied to a box which rests on a level frictionless floor. The cart starts from rest, and moves 2.0 m horizontally along the floor. What is the cart's final kinetic energy? A) 200 J B) 160 J C) 120 J D) zero - ✔✔ANSW✔✔B A 1000 -kg car traveling at 25 m/s runs into the rear of a stopped car that has a mass of 1500 kg and they stick together. What is the speed of the cars after the collision? A) 5.0 m/s B) 10 m/s C) 15 m/s D) 20 m/s - ✔✔ANSW✔✔B A 12-kg object is moving on a rough, level surface. It has 24 J of kinetic energy. The friction force on it is a constant 0.50 N. How far will it slide? A) 2.0 m B) 12 m C) 24 m D) 48 m - ✔✔ANSW✔✔D A 1200 -kg ferryboat is moving south at 20 m/s. What is the magnitude of its momentum? A) 1.7 ˛ 10 -3 kgoem/s B) 6.0 ˛ 102 kgoem/s C) 2.4 ˛ 103 kgoem/s D) 2.4 ˛ 104 kgoem/s - ✔✔ANSW✔✔D A 13,000 N vehicle is to be lifted by a 25 cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomplish this? A) 260 N B) 520 N C) 2600 N D) 5200 N - ✔✔ANSW✔✔B A 15.0 -kg object is moved from a height of 7.00 m above a floor to a height of 13.0 m above the floor. What is the change in gravitational potential energy? A) zero B) 1030 J C) 1176 J D) 1910 J - ✔✔ANSW✔✔C A 1500 -kg car accelerates from 0 to 25 m/s in 7.0 s. What is the average power delivered by the engine? (1 hp = 746 W) A) 60 hp B) 70 hp C) 80 hp D) 90 hp - ✔✔ANSW✔✔D A 1500 -kg car moving at 25 m/s hits an initially uncompressed horizontal spring with spring constant of 2.0 ˛ 106 N/m. What is the maximum compression of the spring? (Neglect the mass of the spring.) A) 0.17 m B) 0.34 mThe benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Bestnursesteve. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
84669 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now