Question

You have two balls. The 300 g ball rolls off the counter landing 2 m out from the counter. The 150 g ball rolls off the counter with the identical speed as the first ball. What distance does the second ball land out from the counter? A.<1m B. 1 m C. Between 1 m and 2 m D. 2 m E. Between 2 m and 4 m F. 4 m 4(a). A projectile is launched horizontally from a 73-m-high cliff with a velocity of +27 m/s. Assuming no air resistance, what is the time required to reach the ground? A.2.0 s B. 3.25 C. 3.95 D.4.95 E.5.0 s 4(b). - (This is the bonus question.) For problem 4(a), how far out is it when it hits the ground? A. 75 m B.90 m C. 100 m D. 170 m E. 280 m A spring stretched by Ax = 4.0 cm causes an object of mass m to have an acceleration of 2 m/s. A second object with mass 2m is attached to two identical springs as the first spring, both springs are each extended Ax = 4.0 cm. What is the second object's resulting acceleration? A. 1 m/s? B.2 m/s? C. 4 m/s D. 8 m/s E. 16 m/s 6. There are two blocks with one resting on the other as shown. A force, F. is pulling on the lower block. The two blocks accelerate to the right together. Why does block A move? A. Block B imparts a frictional force on block A, directed to the left B. Block B imparts a frictional force on block A, directed to the right C. Block B exerts a normal force but no frictional force on block A. 7. Two weights sit at rest on the frictionless surfaces as shown. For this to be static, what is the mass of the object on the right? A. 49 kg B.6.1 kg C.79 kg D. 9.8 kg E. 12 kg

Answer 1

Ki

#3 32704 27 21 uugo 4 3 2 x t = 3085 se Sarat = 103.95 Julle In - 2783.88 I m nm me 2 m a., W²A = r 200 { wa Boll ② Block B exerts. a force a frictional frece on block A, directed to eight. - 52 4x10? a' - 1 m 2 local em 23 - m mig for no loksin 23 - 6.07 leg I uption BB Sinyo کر ہر