Amass of 50 g stretches a spring 3.828125 cm. if the mass is set in motion from its equilibrium position with a downward velocity of 30 cm/s, and if there is no damping, determine the position u of the mass at any time t. assume g = 9.8 m/s^2. enter the exact answer. u(t) = 3/16 sin (160 t) when does the mass first return to its equilibrium position? enter the exact answer. use "pi" or symbol pi to enter the pi, if needed.

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

i use my brain for prombles like this maybe you could try it

step-by-step explanation: